Index: branches/5.2.x/core/units/user_groups/user_groups_eh.php
===================================================================
diff -u -N -r14437 -r14572
--- branches/5.2.x/core/units/user_groups/user_groups_eh.php	(.../user_groups_eh.php)	(revision 14437)
+++ branches/5.2.x/core/units/user_groups/user_groups_eh.php	(.../user_groups_eh.php)	(revision 14572)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: user_groups_eh.php 14437 2011-07-07 18:00:21Z alex $
+* @version	$Id: user_groups_eh.php 14572 2011-09-20 15:25:49Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -83,7 +83,7 @@
 				}
 			}
 
-			$this->Application->StoreVar($this->Application->GetTopmostPrefix($event->Prefix).'_modified', '1');
+			$this->Application->StoreVar($this->Application->GetTopmostPrefix($event->Prefix).'_modified', '1', true); // true for optional
 			$event->SetRedirectParam('opener', 'u');
 		}