Index: branches/5.2.x/core/units/users/users_event_handler.php
===================================================================
diff -u -N -r16692 -r16774
--- branches/5.2.x/core/units/users/users_event_handler.php	(.../users_event_handler.php)	(revision 16692)
+++ branches/5.2.x/core/units/users/users_event_handler.php	(.../users_event_handler.php)	(revision 16774)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: users_event_handler.php 16692 2021-08-31 09:24:09Z alex $
+* @version	$Id: users_event_handler.php 16774 2023-11-22 08:51:16Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -1665,6 +1665,12 @@
 					WHERE PortalUserId IN (' . implode(',', $user_ids) . ')';
 			$this->Conn->Query($sql);
 
+			foreach ( $user_ids as $user_id ) {
+				$this->Application->incrementCacheSerial('u', $user_id);
+			}
+
+			$this->Application->incrementCacheSerial('u');
+
 			$sql = 'SELECT PortalUserId
 					FROM ' . $table_name . '
 					WHERE (GroupId = ' . $primary_group_id . ') AND (PortalUserId IN (' . implode(',', $user_ids) . '))';