Index: branches/5.3.x/core/units/user_groups/user_groups_eh.php
===================================================================
diff -u -N -r15483 -r15986
--- branches/5.3.x/core/units/user_groups/user_groups_eh.php	(.../user_groups_eh.php)	(revision 15483)
+++ branches/5.3.x/core/units/user_groups/user_groups_eh.php	(.../user_groups_eh.php)	(revision 15986)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: user_groups_eh.php 15145 2012-03-04 09:04:08Z alex $
+* @version	$Id: user_groups_eh.php 15986 2013-10-07 14:37:54Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -43,8 +43,12 @@
 				$new_groups = array_diff($new_groups, $old_groups);
 
 				if ($new_groups) {
+					$new_id = (int)$this->Conn->GetOne('SELECT MIN(Id) FROM ' . $table_name .' WHERE Id < 0' );
+
 					foreach ($new_groups as $new_group) {
+						$new_id--;
 						$fields_hash = Array (
+							'Id'			=>	$new_id,
 							'GroupId'		=>	$new_group,
 							'PortalUserId'	=>	$user_id,
 						);
@@ -73,8 +77,12 @@
 				$new_users = array_diff($new_users, $old_users);
 
 				if ($new_users) {
+					$new_id = (int)$this->Conn->GetOne('SELECT MIN(Id) FROM ' . $table_name .' WHERE Id < 0' );
+
 					foreach ($new_users as $new_user) {
+						$new_id--;
 						$fields_hash = Array (
+							'Id'			=>	$new_id,
 							'GroupId'		=>	$group_id,
 							'PortalUserId'	=>	$new_user,
 						);