Index: branches/5.2.x/units/orders/orders_event_handler.php
===================================================================
diff -u -N -r16200 -r16234
--- branches/5.2.x/units/orders/orders_event_handler.php	(.../orders_event_handler.php)	(revision 16200)
+++ branches/5.2.x/units/orders/orders_event_handler.php	(.../orders_event_handler.php)	(revision 16234)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: orders_event_handler.php 16200 2015-05-25 01:24:07Z alex $
+* @version	$Id: orders_event_handler.php 16234 2015-09-02 19:57:48Z alex $
 * @package	In-Commerce
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license	Commercial License
@@ -2983,7 +2983,7 @@
 
 			$processed_sub_orders[] = $sub_order->GetID();
 
-			$next_sub_number++;
+			$next_sub_number = $sub_order->getNextSubNumber();
 			$group++;
 		}