// categories multishop improved

controllers/admin/AdminCategoriesController.php

@@ -323,6 +323,7 @@ class AdminCategoriesControllerCore extends AdminController
 						'use_radio' => true,
 						'use_search' => false,
 						'disabled_categories' => array(4),
+						'top_category' => Category::getTopCategory(),
 					)
 				),
 				array(
@@ -407,6 +408,15 @@ class AdminCategoriesControllerCore extends AdminController
 				'class' => 'button'
 			)
 		);
+		if (Shop::isFeatureActive())
+		{
+			$this->fields_form['input'][] = array(
+				'type' => 'shop',
+				'label' => $this->l('Shop association:'),
+				'name' => 'checkBoxShopAsso',
+				'values' => Shop::getTree()
+			);
+		}
 		if (Tools::isSubmit('add'.$this->table.'root'))
 			unset($this->fields_form['input'][2],$this->fields_form['input'][3]);
 

controllers/admin/AdminProductsController.php

@@ -2466,7 +2466,8 @@ class AdminProductsControllerCore extends AdminController
 		$product = $obj;
 		$data = $this->createTemplate($this->tpl_form);
 		// Prepare Categories tree for display in Associations tab
-		$default_category = Tools::getValue('id_category', 1);
+		$root = Category::getRootCategory();
+		$default_category = Tools::getValue('id_category', $root->id);
 
 		if (!$product->id)
 			$selected_cat = Category::getCategoryInformations(Tools::getValue('categoryBox', array($default_category)), $this->default_form_language);