diff --git a/classes/Configuration.php b/classes/Configuration.php
index dd57cb048..ffb5e81eb 100644
--- a/classes/Configuration.php
+++ b/classes/Configuration.php
@@ -53,8 +53,8 @@ class ConfigurationCore extends ObjectModel
 		'multilang' => true,
 		'fields' => array(
 			'name' => 			array('type' => self::TYPE_STRING, 'validate' => 'isConfigName', 'required' => true, 'size' => 32),
-			'id_group_shop' => 	array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
-			'id_shop' => 		array('type' => self::TYPE_INT, 'validate' => 'isUnsignedId'),
+			'id_group_shop' => 	array('type' => self::TYPE_NOTHING, 'validate' => 'isUnsignedId'),
+			'id_shop' => 		array('type' => self::TYPE_NOTHING, 'validate' => 'isUnsignedId'),
 			'value' => 			array('type' => self::TYPE_STRING),
 			'date_add' => 		array('type' => self::TYPE_DATE, 'validate' => 'isDate'),
 			'date_upd' => 		array('type' => self::TYPE_DATE, 'validate' => 'isDate'),
diff --git a/classes/ObjectModel.php b/classes/ObjectModel.php
index 82619f7f8..21d4bbf49 100644
--- a/classes/ObjectModel.php
+++ b/classes/ObjectModel.php
@@ -36,6 +36,7 @@ abstract class ObjectModelCore
 	const TYPE_FLOAT = 4;
 	const TYPE_DATE = 5;
 	const TYPE_HTML = 6;
+	const TYPE_NOTHING = 7;
 
 	/**
 	 * List of association types
@@ -338,6 +339,9 @@ abstract class ObjectModelCore
 					return '\''.pSQL($value, true).'\'';
 				return pSQL($value, true);
 
+			case self::TYPE_NOTHING :
+				return $value;
+
 			case self::TYPE_STRING :
 			default :
 				if ($with_quotes)
diff --git a/install-new/classes/xmlLoader.php b/install-new/classes/xmlLoader.php
index 3da97159a..c1a8eb976 100644
--- a/install-new/classes/xmlLoader.php
+++ b/install-new/classes/xmlLoader.php
@@ -393,12 +393,14 @@ class InstallXmlLoader
 		}
 		else if ($classname)
 		{
+			$xml = $this->loadEntity($entity);
+
 			// Create entity with ObjectModel class
 			$object = new $classname();
 			$object->hydrate($data);
 			if ($data_lang)
 				$object->hydrate($data_lang);
-			$object->add();
+			$object->add(true, (isset($xml->fields['null'])) ? true : false);
 			$entity_id = $object->id;
 		}
 		else
@@ -669,6 +671,7 @@ class InstallXmlLoader
 				'sql' => 		'',
 				'ordersql' => 	'',
 				'image' => 		'',
+				'null' => 		'',
 			),
 			'fields' => 	array(),
 		);
@@ -695,6 +698,9 @@ class InstallXmlLoader
 		if ($xml->fields['ordersql'])
 			$info['config']['ordersql'] = (string)$xml->fields['ordersql'];
 
+		if ($xml->fields['null'])
+			$info['config']['null'] = (string)$xml->fields['null'];
+
 		if ($xml->fields['image'])
 			$info['config']['image'] = (string)$xml->fields['image'];
 
diff --git a/install-new/data/xml/access.xml b/install-new/data/xml/access.xml
index a2eff04ba..ef368b7f4 100644
--- a/install-new/data/xml/access.xml
+++ b/install-new/data/xml/access.xml
@@ -1,13 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_access>
-  <fields primary="id_profile, id_tab" sql="a.id_profile = 1">
-    <field name="id_profile" relation="profile"/>
-    <field name="id_tab" relation="tab"/>
-    <field name="view"/>
-    <field name="add"/>
-    <field name="edit"/>
-    <field name="delete"/>
-  </fields>
   <entities>
     <access id="access_1_1" id_profile="SuperAdmin" id_tab="Catalog" view="1" add="1" edit="1" delete="1"/>
     <access id="access_1_2" id_profile="SuperAdmin" id_tab="Customers" view="1" add="1" edit="1" delete="1"/>
@@ -109,4 +101,12 @@
     <access id="access_1_109" id_profile="SuperAdmin" id_tab="Catalog_price_rules" view="1" add="1" edit="1" delete="1"/>
     <access id="access_1_110" id_profile="SuperAdmin" id_tab="Outstanding" view="1" add="1" edit="1" delete="1"/>
   </entities>
+  <fields primary="id_profile, id_tab" sql="a.id_profile = 1">
+    <field name="id_profile" relation="profile"/>
+    <field name="id_tab" relation="tab"/>
+    <field name="view"/>
+    <field name="add"/>
+    <field name="edit"/>
+    <field name="delete"/>
+  </fields>
 </entity_access>
diff --git a/install-new/data/xml/address_format.xml b/install-new/data/xml/address_format.xml
index 466bb5720..20901acb7 100644
--- a/install-new/data/xml/address_format.xml
+++ b/install-new/data/xml/address_format.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_address_format>
-  <fields primary="id_country" class="AddressFormat">
-    <field name="id_country" relation="country"/>
-    <field name="format"/>
-  </fields>
   <entities>
     <address_format id="address_format_1" id_country="DE">
       <format>firstname lastname
@@ -2444,4 +2440,8 @@ Country:name
 phone</format>
     </address_format>
   </entities>
+  <fields primary="id_country" class="AddressFormat">
+    <field name="id_country" relation="country"/>
+    <field name="format"/>
+  </fields>
 </entity_address_format>
diff --git a/install-new/data/xml/carrier.xml b/install-new/data/xml/carrier.xml
index d4aed93b1..fe4e6f833 100644
--- a/install-new/data/xml/carrier.xml
+++ b/install-new/data/xml/carrier.xml
@@ -1,5 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_carrier>
+  <entities>
+    <carrier id="carrier_1" id_reference="1" id_tax_rules_group="0" active="1" shipping_handling="0" range_behavior="0" is_free="0" shipping_external="0" need_range="0" shipping_method="0" max_width="0" max_height="0" max_depth="0" max_weight="0" grade="0">
+      <name>0</name>
+      <url/>
+    </carrier>
+  </entities>
   <fields id="name" class="Carrier" sql="a.id_carrier = 1">
     <field name="id_reference"/>
     <field name="id_tax_rules_group"/>
@@ -18,10 +24,4 @@
     <field name="max_weight"/>
     <field name="grade"/>
   </fields>
-  <entities>
-    <carrier id="carrier_1" id_reference="1" id_tax_rules_group="0" active="1" shipping_handling="0" range_behavior="0" is_free="0" shipping_external="0" need_range="0" shipping_method="0" max_width="0" max_height="0" max_depth="0" max_weight="0" grade="0">
-      <name>0</name>
-      <url/>
-    </carrier>
-  </entities>
 </entity_carrier>
diff --git a/install-new/data/xml/carrier_group.xml b/install-new/data/xml/carrier_group.xml
index 63ee20d09..161d25bd5 100644
--- a/install-new/data/xml/carrier_group.xml
+++ b/install-new/data/xml/carrier_group.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_carrier_group>
+  <entities/>
   <fields primary="id_carrier, id_group" sql="a.id_carrier = 1">
     <field name="id_carrier" relation="carrier"/>
     <field name="id_group" relation="group"/>
   </fields>
-  <entities/>
 </entity_carrier_group>
diff --git a/install-new/data/xml/carrier_zone.xml b/install-new/data/xml/carrier_zone.xml
index eba14abc4..69b5ceb64 100644
--- a/install-new/data/xml/carrier_zone.xml
+++ b/install-new/data/xml/carrier_zone.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_carrier_zone>
+  <entities>
+    <carrier_zone id="carrier_zone_1_1" id_carrier="carrier_1" id_zone="Europe"/>
+  </entities>
   <fields primary="id_carrier, id_zone" sql="a.id_carrier = 1">
     <field name="id_carrier" relation="carrier"/>
     <field name="id_zone" relation="zone"/>
   </fields>
-  <entities>
-    <carrier_zone id="carrier_zone_1_1" id_carrier="carrier_1" id_zone="Europe"/>
-  </entities>
 </entity_carrier_zone>
diff --git a/install-new/data/xml/category.xml b/install-new/data/xml/category.xml
index 5fdd43b44..7bb81cc80 100644
--- a/install-new/data/xml/category.xml
+++ b/install-new/data/xml/category.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_category>
+  <entities>
+    <category id="Home" id_parent="" active="1"/>
+  </entities>
   <fields id="name" class="Category" sql="a.id_category = 1">
     <field name="id_parent" relation="category"/>
     <field name="active"/>
   </fields>
-  <entities>
-    <category id="Home" id_parent="" active="1"/>
-  </entities>
 </entity_category>
diff --git a/install-new/data/xml/category_group.xml b/install-new/data/xml/category_group.xml
index a61018734..01f5f8db8 100644
--- a/install-new/data/xml/category_group.xml
+++ b/install-new/data/xml/category_group.xml
@@ -1,12 +1,12 @@
 <?xml version="1.0"?>
 <entity_category_group>
-  <fields primary="id_category, id_group" sql="a.id_category = 1">
-    <field name="id_category" relation="category"/>
-    <field name="id_group" relation="group"/>
-  </fields>
   <entities>
     <category_group id="category_group_1_1" id_category="Home" id_group="Unidentified"/>
     <category_group id="category_group_1_2" id_category="Home" id_group="Guest"/>
     <category_group id="category_group_1_3" id_category="Home" id_group="Default"/>
   </entities>
+  <fields primary="id_category, id_group" sql="a.id_category = 1">
+    <field name="id_category" relation="category"/>
+    <field name="id_group" relation="group"/>
+  </fields>
 </entity_category_group>
diff --git a/install-new/data/xml/cms.xml b/install-new/data/xml/cms.xml
index b8ca83e16..1f1eef6e6 100644
--- a/install-new/data/xml/cms.xml
+++ b/install-new/data/xml/cms.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_cms>
-  <fields id="meta_title" class="CMS">
-    <field name="id_cms_category" relation="cms_category"/>
-    <field name="active"/>
-  </fields>
   <entities>
     <cms id="Delivery" id_cms_category="Home" active="1"/>
     <cms id="Legal_Notice" id_cms_category="Home" active="1"/>
@@ -11,4 +7,8 @@
     <cms id="About_us" id_cms_category="Home" active="1"/>
     <cms id="Secure_payment" id_cms_category="Home" active="1"/>
   </entities>
+  <fields id="meta_title" class="CMS">
+    <field name="id_cms_category" relation="cms_category"/>
+    <field name="active"/>
+  </fields>
 </entity_cms>
diff --git a/install-new/data/xml/cms_category.xml b/install-new/data/xml/cms_category.xml
index 33d4e3d2d..730951149 100644
--- a/install-new/data/xml/cms_category.xml
+++ b/install-new/data/xml/cms_category.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_cms_category>
+  <entities>
+    <cms_category id="Home" id_parent="" active="1"/>
+  </entities>
   <fields id="name" class="CMSCategory">
     <field name="id_parent" relation="cms_category"/>
     <field name="active"/>
   </fields>
-  <entities>
-    <cms_category id="Home" id_parent="" active="1"/>
-  </entities>
 </entity_cms_category>
diff --git a/install-new/data/xml/configuration.xml b/install-new/data/xml/configuration.xml
index b60ddd987..1262b6407 100644
--- a/install-new/data/xml/configuration.xml
+++ b/install-new/data/xml/configuration.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_configuration>
-  <fields id="name" class="Configuration">
-    <field name="name"/>
-    <field name="value"/>
-  </fields>
   <entities>
     <configuration id="PS_LANG_DEFAULT" name="PS_LANG_DEFAULT">
       <value>2</value>
@@ -852,4 +848,8 @@
       <value>0</value>
     </configuration>
   </entities>
+  <fields id="name" class="Configuration" null="1">
+    <field name="name"/>
+    <field name="value"/>
+  </fields>
 </entity_configuration>
diff --git a/install-new/data/xml/contact.xml b/install-new/data/xml/contact.xml
index 9f8034390..45da756a4 100644
--- a/install-new/data/xml/contact.xml
+++ b/install-new/data/xml/contact.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_contact>
-  <fields id="name" class="Contact">
-    <field name="customer_service"/>
-  </fields>
   <entities>
     <contact id="Webmaster" customer_service="1"/>
     <contact id="Customer_service" customer_service="1"/>
   </entities>
+  <fields id="name" class="Contact">
+    <field name="customer_service"/>
+  </fields>
 </entity_contact>
diff --git a/install-new/data/xml/country.xml b/install-new/data/xml/country.xml
index 2bb63d79d..c61b8e9f1 100644
--- a/install-new/data/xml/country.xml
+++ b/install-new/data/xml/country.xml
@@ -1,16 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_country>
-  <fields id="iso_code" class="Country">
-    <field name="id_zone" relation="zone"/>
-    <field name="iso_code"/>
-    <field name="call_prefix"/>
-    <field name="active"/>
-    <field name="contains_states"/>
-    <field name="need_identification_number"/>
-    <field name="need_zip_code"/>
-    <field name="zip_code_format"/>
-    <field name="display_tax_label"/>
-  </fields>
   <entities>
     <country id="DE" id_zone="Europe" iso_code="DE" call_prefix="49" active="1" contains_states="0" need_identification_number="0" need_zip_code="1" zip_code_format="NNNNN" display_tax_label="1"/>
     <country id="AT" id_zone="Europe" iso_code="AT" call_prefix="43" active="1" contains_states="0" need_identification_number="0" need_zip_code="1" zip_code_format="NNNN" display_tax_label="1"/>
@@ -257,4 +246,15 @@
     <country id="TF" id_zone="Oceania" iso_code="TF" call_prefix="0" active="1" contains_states="0" need_identification_number="0" need_zip_code="1" zip_code_format="" display_tax_label="1"/>
     <country id="AX" id_zone="Europe_out_E_U" iso_code="AX" call_prefix="0" active="1" contains_states="0" need_identification_number="0" need_zip_code="1" zip_code_format="NNNNN" display_tax_label="1"/>
   </entities>
+  <fields id="iso_code" class="Country">
+    <field name="id_zone" relation="zone"/>
+    <field name="iso_code"/>
+    <field name="call_prefix"/>
+    <field name="active"/>
+    <field name="contains_states"/>
+    <field name="need_identification_number"/>
+    <field name="need_zip_code"/>
+    <field name="zip_code_format"/>
+    <field name="display_tax_label"/>
+  </fields>
 </entity_country>
diff --git a/install-new/data/xml/delivery.xml b/install-new/data/xml/delivery.xml
index 9e8bc85c9..fc42bd63c 100644
--- a/install-new/data/xml/delivery.xml
+++ b/install-new/data/xml/delivery.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0"?>
 <entity_delivery>
+  <entities/>
   <fields class="Delivery" sql="a.id_carrier = 1">
     <field name="id_shop"/>
     <field name="id_group_shop"/>
@@ -9,5 +10,4 @@
     <field name="id_zone" relation="zone"/>
     <field name="price"/>
   </fields>
-  <entities/>
 </entity_delivery>
diff --git a/install-new/data/xml/gender.xml b/install-new/data/xml/gender.xml
index fd324a60d..8baeadefd 100644
--- a/install-new/data/xml/gender.xml
+++ b/install-new/data/xml/gender.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_gender>
-  <fields id="name" class="Gender" image="genders">
-    <field name="type"/>
-  </fields>
   <entities>
     <gender id="Mr" type="0"/>
     <gender id="Ms" type="1"/>
     <gender id="Miss" type="1"/>
   </entities>
+  <fields id="name" class="Gender" image="genders">
+    <field name="type"/>
+  </fields>
 </entity_gender>
diff --git a/install-new/data/xml/group.xml b/install-new/data/xml/group.xml
index acef37033..95ecac33e 100644
--- a/install-new/data/xml/group.xml
+++ b/install-new/data/xml/group.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_group>
-  <fields id="name" class="Group">
-    <field name="reduction"/>
-    <field name="price_display_method"/>
-    <field name="show_prices"/>
-  </fields>
   <entities>
     <group id="Unidentified" reduction="0.00" price_display_method="0" show_prices="1"/>
     <group id="Guest" reduction="0.00" price_display_method="0" show_prices="1"/>
     <group id="Default" reduction="0.00" price_display_method="0" show_prices="1"/>
   </entities>
+  <fields id="name" class="Group">
+    <field name="reduction"/>
+    <field name="price_display_method"/>
+    <field name="show_prices"/>
+  </fields>
 </entity_group>
diff --git a/install-new/data/xml/hook.xml b/install-new/data/xml/hook.xml
index 395a6f2e1..7a9ee0e4e 100644
--- a/install-new/data/xml/hook.xml
+++ b/install-new/data/xml/hook.xml
@@ -1,12 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_hook>
-  <fields id="name" class="Hook">
-    <field name="name"/>
-    <field name="title"/>
-    <field name="description"/>
-    <field name="live_edit"/>
-    <field name="is_native"/>
-  </fields>
   <entities>
     <hook id="displayPayment" live_edit="1" is_native="0">
       <name>displayPayment</name>
@@ -439,4 +432,11 @@
       <description>Display extra informations inside the "my account" block</description>
     </hook>
   </entities>
+  <fields id="name" class="Hook">
+    <field name="name"/>
+    <field name="title"/>
+    <field name="description"/>
+    <field name="live_edit"/>
+    <field name="is_native"/>
+  </fields>
 </entity_hook>
diff --git a/install-new/data/xml/hook_alias.xml b/install-new/data/xml/hook_alias.xml
index 78faaa98f..af93a761b 100644
--- a/install-new/data/xml/hook_alias.xml
+++ b/install-new/data/xml/hook_alias.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_hook_alias>
-  <fields id="alias">
-    <field name="alias"/>
-    <field name="name"/>
-  </fields>
   <entities>
     <hook_alias id="payment">
       <alias>payment</alias>
@@ -346,4 +342,8 @@
       <name>actionTaxManager</name>
     </hook_alias>
   </entities>
+  <fields id="alias">
+    <field name="alias"/>
+    <field name="name"/>
+  </fields>
 </entity_hook_alias>
diff --git a/install-new/data/xml/image_type.xml b/install-new/data/xml/image_type.xml
index 0c72134bf..80a3a99ae 100644
--- a/install-new/data/xml/image_type.xml
+++ b/install-new/data/xml/image_type.xml
@@ -1,5 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_image_type>
+  <entities>
+    <image_type id="small" id_theme="default" name="small" width="45" height="45" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="0"/>
+    <image_type id="medium" id_theme="default" name="medium" width="58" height="58" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="1"/>
+    <image_type id="large" id_theme="default" name="large" width="264" height="264" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="0"/>
+    <image_type id="thickbox" id_theme="default" name="thickbox" width="600" height="600" products="1" categories="0" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
+    <image_type id="category" id_theme="default" name="category" width="500" height="150" products="0" categories="1" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
+    <image_type id="home" id_theme="default" name="home" width="124" height="124" products="1" categories="0" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
+    <image_type id="large_scene" id_theme="default" name="large_scene" width="556" height="200" products="0" categories="0" manufacturers="0" suppliers="0" scenes="1" stores="0"/>
+    <image_type id="thumb_scene" id_theme="default" name="thumb_scene" width="161" height="58" products="0" categories="0" manufacturers="0" suppliers="0" scenes="1" stores="0"/>
+  </entities>
   <fields id="name" class="ImageType">
     <field name="id_theme" relation="theme"/>
     <field name="name"/>
@@ -12,14 +22,4 @@
     <field name="scenes"/>
     <field name="stores"/>
   </fields>
-  <entities>
-    <image_type id="small" id_theme="default" name="small" width="45" height="45" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="0"/>
-    <image_type id="medium" id_theme="default" name="medium" width="58" height="58" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="1"/>
-    <image_type id="large" id_theme="default" name="large" width="264" height="264" products="1" categories="1" manufacturers="1" suppliers="1" scenes="0" stores="0"/>
-    <image_type id="thickbox" id_theme="default" name="thickbox" width="600" height="600" products="1" categories="0" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
-    <image_type id="category" id_theme="default" name="category" width="500" height="150" products="0" categories="1" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
-    <image_type id="home" id_theme="default" name="home" width="124" height="124" products="1" categories="0" manufacturers="0" suppliers="0" scenes="0" stores="0"/>
-    <image_type id="large_scene" id_theme="default" name="large_scene" width="556" height="200" products="0" categories="0" manufacturers="0" suppliers="0" scenes="1" stores="0"/>
-    <image_type id="thumb_scene" id_theme="default" name="thumb_scene" width="161" height="58" products="0" categories="0" manufacturers="0" suppliers="0" scenes="1" stores="0"/>
-  </entities>
 </entity_image_type>
diff --git a/install-new/data/xml/meta.xml b/install-new/data/xml/meta.xml
index 1afd028dc..55bcd3672 100644
--- a/install-new/data/xml/meta.xml
+++ b/install-new/data/xml/meta.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_meta>
-  <fields id="page" class="Meta">
-    <field name="page"/>
-  </fields>
   <entities>
     <meta id="404">
       <page>404</page>
@@ -80,4 +77,7 @@
       <page>guest-tracking</page>
     </meta>
   </entities>
+  <fields id="page" class="Meta">
+    <field name="page"/>
+  </fields>
 </entity_meta>
diff --git a/install-new/data/xml/operating_system.xml b/install-new/data/xml/operating_system.xml
index d77191e76..733f82677 100644
--- a/install-new/data/xml/operating_system.xml
+++ b/install-new/data/xml/operating_system.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_operating_system>
-  <fields id="name">
-    <field name="name"/>
-  </fields>
   <entities>
     <operating_system id="Windows_XP">
       <name>Windows XP</name>
@@ -17,4 +14,7 @@
       <name>Linux</name>
     </operating_system>
   </entities>
+  <fields id="name">
+    <field name="name"/>
+  </fields>
 </entity_operating_system>
diff --git a/install-new/data/xml/order_return_state.xml b/install-new/data/xml/order_return_state.xml
index 620a03dbf..fdd5d495a 100644
--- a/install-new/data/xml/order_return_state.xml
+++ b/install-new/data/xml/order_return_state.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_order_return_state>
-  <fields id="name" class="OrderReturnState">
-    <field name="color"/>
-  </fields>
   <entities>
     <order_return_state id="Waiting_for_confirmation" color="RoyalBlue"/>
     <order_return_state id="Waiting_for_package" color="BlueViolet"/>
@@ -10,4 +7,7 @@
     <order_return_state id="Return_denied" color="Crimson"/>
     <order_return_state id="Return_completed" color="#108510"/>
   </entities>
+  <fields id="name" class="OrderReturnState">
+    <field name="color"/>
+  </fields>
 </entity_order_return_state>
diff --git a/install-new/data/xml/order_state.xml b/install-new/data/xml/order_state.xml
index 77b2eaefd..537e60edd 100644
--- a/install-new/data/xml/order_state.xml
+++ b/install-new/data/xml/order_state.xml
@@ -1,16 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_order_state>
-  <fields id="name" class="OrderState" image="os">
-    <field name="invoice"/>
-    <field name="send_email"/>
-    <field name="color"/>
-    <field name="unremovable"/>
-    <field name="hidden"/>
-    <field name="logable"/>
-    <field name="delivery"/>
-    <field name="shipped"/>
-    <field name="paid"/>
-  </fields>
   <entities>
     <order_state id="Awaiting_cheque_payment" invoice="0" send_email="1" color="RoyalBlue" unremovable="1" hidden="0" logable="0" delivery="0" shipped="0" paid="0"/>
     <order_state id="Payment_accepted" invoice="1" send_email="1" color="LimeGreen" unremovable="1" hidden="0" logable="1" delivery="0" shipped="0" paid="1"/>
@@ -25,4 +14,15 @@
     <order_state id="Awaiting_PayPal_payment" invoice="0" send_email="0" color="RoyalBlue" unremovable="1" hidden="0" logable="0" delivery="0" shipped="0" paid="0"/>
     <order_state id="Payment_remotely_accepted" invoice="1" send_email="0" color="LimeGreen" unremovable="1" hidden="0" logable="1" delivery="0" shipped="0" paid="1"/>
   </entities>
+  <fields id="name" class="OrderState" image="os">
+    <field name="invoice"/>
+    <field name="send_email"/>
+    <field name="color"/>
+    <field name="unremovable"/>
+    <field name="hidden"/>
+    <field name="logable"/>
+    <field name="delivery"/>
+    <field name="shipped"/>
+    <field name="paid"/>
+  </fields>
 </entity_order_state>
diff --git a/install-new/data/xml/profile.xml b/install-new/data/xml/profile.xml
index 557a09f5c..fce9aa157 100644
--- a/install-new/data/xml/profile.xml
+++ b/install-new/data/xml/profile.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_profile>
-  <fields id="name" class="Profile" sql="a.id_profile = 1"/>
   <entities>
     <profile id="SuperAdmin"/>
   </entities>
+  <fields id="name" class="Profile" sql="a.id_profile = 1"/>
 </entity_profile>
diff --git a/install-new/data/xml/quick_access.xml b/install-new/data/xml/quick_access.xml
index 2097553e1..d924fa040 100644
--- a/install-new/data/xml/quick_access.xml
+++ b/install-new/data/xml/quick_access.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_quick_access>
-  <fields id="name" class="QuickAccess">
-    <field name="new_window"/>
-    <field name="link"/>
-  </fields>
   <entities>
     <quick_access id="Home" new_window="0">
       <link>index.php</link>
@@ -21,4 +17,8 @@
       <link>index.php?controller=AdminCartRules&amp;addcart_rule</link>
     </quick_access>
   </entities>
+  <fields id="name" class="QuickAccess">
+    <field name="new_window"/>
+    <field name="link"/>
+  </fields>
 </entity_quick_access>
diff --git a/install-new/data/xml/risk.xml b/install-new/data/xml/risk.xml
index c8a17a7c2..0fd39d6cf 100644
--- a/install-new/data/xml/risk.xml
+++ b/install-new/data/xml/risk.xml
@@ -1,13 +1,13 @@
 <?xml version="1.0"?>
 <entity_risk>
-  <fields id="name" class="Risk">
-    <field name="percent"/>
-    <field name="color"/>
-  </fields>
   <entities>
     <risk id="None" percent="0" color="LimeGreen"/>
     <risk id="Low" percent="35" color="DarkOrange"/>
     <risk id="Middle" percent="75" color="Crimson"/>
     <risk id="Hight" percent="100" color="#ec2e15"/>
   </entities>
+  <fields id="name" class="Risk">
+    <field name="percent"/>
+    <field name="color"/>
+  </fields>
 </entity_risk>
diff --git a/install-new/data/xml/search_engine.xml b/install-new/data/xml/search_engine.xml
index 411a27ff8..67544ff7f 100644
--- a/install-new/data/xml/search_engine.xml
+++ b/install-new/data/xml/search_engine.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_search_engine>
-  <fields id="server" class="SearchEngine">
-    <field name="server"/>
-    <field name="getvar"/>
-  </fields>
   <entities>
     <search_engine id="google" getvar="q">
       <server>google</server>
@@ -120,4 +116,8 @@
       <server>rambler</server>
     </search_engine>
   </entities>
+  <fields id="server" class="SearchEngine">
+    <field name="server"/>
+    <field name="getvar"/>
+  </fields>
 </entity_search_engine>
diff --git a/install-new/data/xml/state.xml b/install-new/data/xml/state.xml
index 5f48d0706..11deaa7d9 100644
--- a/install-new/data/xml/state.xml
+++ b/install-new/data/xml/state.xml
@@ -1,13 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_state>
-  <fields id="iso_code" class="State">
-    <field name="id_country" relation="country"/>
-    <field name="id_zone" relation="zone"/>
-    <field name="name"/>
-    <field name="iso_code"/>
-    <field name="tax_behavior"/>
-    <field name="active"/>
-  </fields>
   <entities>
     <state id="AL" id_country="US" id_zone="North_America" iso_code="AL" tax_behavior="0" active="1">
       <name>Alabama</name>
@@ -946,4 +938,12 @@
       <name>Yamanashi</name>
     </state>
   </entities>
+  <fields id="iso_code" class="State">
+    <field name="id_country" relation="country"/>
+    <field name="id_zone" relation="zone"/>
+    <field name="name"/>
+    <field name="iso_code"/>
+    <field name="tax_behavior"/>
+    <field name="active"/>
+  </fields>
 </entity_state>
diff --git a/install-new/data/xml/stock_mvt_reason.xml b/install-new/data/xml/stock_mvt_reason.xml
index 93ce8d919..5042367c9 100644
--- a/install-new/data/xml/stock_mvt_reason.xml
+++ b/install-new/data/xml/stock_mvt_reason.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_stock_mvt_reason>
-  <fields id="name" class="StockMvtReason">
-    <field name="sign"/>
-  </fields>
   <entities>
     <stock_mvt_reason id="Increase" sign="1"/>
     <stock_mvt_reason id="Decrease" sign="-1"/>
@@ -13,4 +10,7 @@
     <stock_mvt_reason id="Transfer_from_another_warehouse" sign="1"/>
     <stock_mvt_reason id="Supply_Order" sign="1"/>
   </entities>
+  <fields id="name" class="StockMvtReason">
+    <field name="sign"/>
+  </fields>
 </entity_stock_mvt_reason>
diff --git a/install-new/data/xml/subdomain.xml b/install-new/data/xml/subdomain.xml
index 07156939b..9e50bf9b0 100644
--- a/install-new/data/xml/subdomain.xml
+++ b/install-new/data/xml/subdomain.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_subdomain>
-  <fields id="name" class="SubDomain">
-    <field name="name"/>
-  </fields>
   <entities>
     <subdomain id="www" name="www"/>
   </entities>
+  <fields id="name" class="SubDomain">
+    <field name="name"/>
+  </fields>
 </entity_subdomain>
diff --git a/install-new/data/xml/supply_order_state.xml b/install-new/data/xml/supply_order_state.xml
index f7a0299d3..d420894a4 100644
--- a/install-new/data/xml/supply_order_state.xml
+++ b/install-new/data/xml/supply_order_state.xml
@@ -1,13 +1,5 @@
 <?xml version="1.0"?>
 <entity_supply_order_state>
-  <fields class="SupplyOrderState">
-    <field name="delivery_note"/>
-    <field name="editable"/>
-    <field name="receipt_state"/>
-    <field name="pending_receipt"/>
-    <field name="enclosed"/>
-    <field name="color"/>
-  </fields>
   <entities>
     <supply_order_state id="supply_order_state_1" delivery_note="0" editable="1" receipt_state="0" pending_receipt="0" enclosed="0" color="#faab00"/>
     <supply_order_state id="supply_order_state_2" delivery_note="1" editable="0" receipt_state="0" pending_receipt="0" enclosed="0" color="#273cff"/>
@@ -16,4 +8,12 @@
     <supply_order_state id="supply_order_state_5" delivery_note="0" editable="0" receipt_state="1" pending_receipt="0" enclosed="1" color="#00d60c"/>
     <supply_order_state id="supply_order_state_6" delivery_note="0" editable="0" receipt_state="0" pending_receipt="0" enclosed="1" color="#666666"/>
   </entities>
+  <fields class="SupplyOrderState">
+    <field name="delivery_note"/>
+    <field name="editable"/>
+    <field name="receipt_state"/>
+    <field name="pending_receipt"/>
+    <field name="enclosed"/>
+    <field name="color"/>
+  </fields>
 </entity_supply_order_state>
diff --git a/install-new/data/xml/tab.xml b/install-new/data/xml/tab.xml
index bc8973379..16cb83f93 100644
--- a/install-new/data/xml/tab.xml
+++ b/install-new/data/xml/tab.xml
@@ -1,10 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_tab>
-  <fields id="name" class="Tab" ordersql="a.id_parent, a.position" image="t">
-    <field name="id_parent" relation="tab"/>
-    <field name="class_name"/>
-    <field name="active"/>
-  </fields>
   <entities>
     <tab id="Home" id_parent="-1" active="1">
       <class_name>AdminHome</class_name>
@@ -304,4 +299,9 @@
       <class_name>AdminAccountingExport</class_name>
     </tab>
   </entities>
+  <fields id="name" class="Tab" ordersql="a.id_parent, a.position" image="t">
+    <field name="id_parent" relation="tab"/>
+    <field name="class_name"/>
+    <field name="active"/>
+  </fields>
 </entity_tab>
diff --git a/install-new/data/xml/theme.xml b/install-new/data/xml/theme.xml
index 881be4e2b..f7ebcf3ee 100644
--- a/install-new/data/xml/theme.xml
+++ b/install-new/data/xml/theme.xml
@@ -1,11 +1,11 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_theme>
-  <fields id="name" class="Theme">
-    <field name="name"/>
-  </fields>
   <entities>
     <theme id="default">
       <name>default</name>
     </theme>
   </entities>
+  <fields id="name" class="Theme">
+    <field name="name"/>
+  </fields>
 </entity_theme>
diff --git a/install-new/data/xml/timezone.xml b/install-new/data/xml/timezone.xml
index ca6ac4138..98fe5d8e0 100644
--- a/install-new/data/xml/timezone.xml
+++ b/install-new/data/xml/timezone.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_timezone>
-  <fields id="name">
-    <field name="name"/>
-  </fields>
   <entities>
     <timezone id="Africa_Abidjan" name="Africa/Abidjan"/>
     <timezone id="Africa_Accra" name="Africa/Accra"/>
@@ -565,4 +562,7 @@
     <timezone id="WET" name="WET"/>
     <timezone id="Zulu" name="Zulu"/>
   </entities>
+  <fields id="name">
+    <field name="name"/>
+  </fields>
 </entity_timezone>
diff --git a/install-new/data/xml/warehouse.xml b/install-new/data/xml/warehouse.xml
index f9b165670..746c2af88 100644
--- a/install-new/data/xml/warehouse.xml
+++ b/install-new/data/xml/warehouse.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_warehouse>
+  <entities/>
   <fields id="name" class="Warehouse">
     <field name="id_currency"/>
     <field name="id_address" relation="address"/>
@@ -8,5 +9,4 @@
     <field name="name"/>
     <field name="management_type"/>
   </fields>
-  <entities/>
 </entity_warehouse>
diff --git a/install-new/data/xml/web_browser.xml b/install-new/data/xml/web_browser.xml
index 4d31db30f..28fc73312 100644
--- a/install-new/data/xml/web_browser.xml
+++ b/install-new/data/xml/web_browser.xml
@@ -1,8 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_web_browser>
-  <fields id="name">
-    <field name="name"/>
-  </fields>
   <entities>
     <web_browser id="Safari">
       <name>Safari</name>
@@ -29,4 +26,7 @@
       <name>Google Chrome</name>
     </web_browser>
   </entities>
+  <fields id="name">
+    <field name="name"/>
+  </fields>
 </entity_web_browser>
diff --git a/install-new/data/xml/zone.xml b/install-new/data/xml/zone.xml
index 1213ee9e7..08126df94 100644
--- a/install-new/data/xml/zone.xml
+++ b/install-new/data/xml/zone.xml
@@ -1,9 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <entity_zone>
-  <fields id="name" class="Zone">
-    <field name="name"/>
-    <field name="active"/>
-  </fields>
   <entities>
     <zone id="Europe" active="1">
       <name>Europe</name>
@@ -30,4 +26,8 @@
       <name>Centrale America/Antilla</name>
     </zone>
   </entities>
+  <fields id="name" class="Zone">
+    <field name="name"/>
+    <field name="active"/>
+  </fields>
 </entity_zone>
diff --git a/install-new/dev/index.php b/install-new/dev/index.php
index 830a2bc3e..1a765c523 100644
--- a/install-new/dev/index.php
+++ b/install-new/dev/index.php
@@ -54,6 +54,7 @@ class SynchronizeController extends InstallControllerHttp
 		$sqls = isset($_POST['sql']) ? (array)$_POST['sql'] : array();
 		$orders = isset($_POST['order']) ? (array)$_POST['order'] : array();
 		$images = isset($_POST['image']) ? (array)$_POST['image'] : array();
+		$nulls = isset($_POST['null']) ? (array)$_POST['null'] : array();
 
 		$entities = array();
 		foreach ($tables as $table)
@@ -77,6 +78,9 @@ class SynchronizeController extends InstallControllerHttp
 			if (isset($images[$table]) && $images[$table])
 				$config['image'] = $images[$table];
 
+			if (isset($nulls[$table]) && $nulls[$table])
+				$config['null'] = $nulls[$table];
+
 			$fields = array();
 			if (isset($columns[$table]))
 			{
diff --git a/install-new/dev/index.phtml b/install-new/dev/index.phtml
index 2f025d3be..5731b7058 100644
--- a/install-new/dev/index.phtml
+++ b/install-new/dev/index.phtml
@@ -202,6 +202,9 @@
 										Ordre SQL
 										<input type="text" name="order[<?php echo $entity ?>]" value="<?php echo (isset($entity_info['config']['ordersql'])) ? $entity_info['config']['ordersql'] : '' ?>" />
 									</label>
+									<label>
+										Valeurs NULL <input type="checkbox" name="null[<?php echo $entity ?>]" value="1" <?php if (isset($entity_info['config']['null']) && $entity_info['config']['null']): ?>checked="checked"<?php endif; ?> />
+									</label>
 								</div>
 							</li>
 							<?php foreach ($this->loader->getColumns($entity) as $column => $is_text): ?>