// Warehouse: fixed queries. AdminPPreferencesController: fixed advanced stock management

controllers/admin/AdminPPreferencesController.php

@@ -280,5 +280,20 @@ class AdminPPreferencesControllerCore extends AdminController
 			$_POST['PS_ORDER_OUT_OF_STOCK'] = 1;
 			$_POST['PS_DISPLAY_QTIES'] = 0;
 		}
+
+		// if advanced stock management is disabled, updates concerned tables
+		if (Configuration::get('PS_ADVANCED_STOCK_MANAGEMENT') == 1 &&
+			(int)Tools::getValue('PS_ADVANCED_STOCK_MANAGEMENT') == 0)
+		{
+			Db::getInstance()->execute(
+				'UPDATE `'._DB_PREFIX_.'product`
+				SET `advanced_stock_management` = 0
+				WHERE `advanced_stock_management` = 1');
+
+			Db::getInstance()->execute(
+				'UPDATE `'._DB_PREFIX_.'stock_available`
+				SET `depends_on_stock` = 0, `quantity` = 0
+				WHERE `depends_on_stock` = 1');
+		}
 	}
 }