Index: /mods/mod_rechnungen/wpsg_invoice.php
===================================================================
--- /mods/mod_rechnungen/wpsg_invoice.php	(revision 8285)
+++ /mods/mod_rechnungen/wpsg_invoice.php	(revision 8286)
@@ -115,4 +115,6 @@
 					} else {
 
+						$path = ($path.$this->getOrderIds()[0]).'/';
+
 						if ($this->__get('gnr') !== '') {
 
@@ -136,5 +138,5 @@
 
             }
-			
+
 			\wpsg_ShopController::getShop()->protectDirectory(dirname($path));