Index: branches/version-2_4-dev/data/class/pages/admin/order/LC_Page_Admin_Order_Edit.php
===================================================================
--- branches/version-2_4-dev/data/class/pages/admin/order/LC_Page_Admin_Order_Edit.php	(revision 18674)
+++ branches/version-2_4-dev/data/class/pages/admin/order/LC_Page_Admin_Order_Edit.php	(revision 18678)
@@ -567,4 +567,6 @@
             $sqlval['deliv_date'] .= sprintf("(%s)", $arrWDAY[date("w", $ts)]);
 
+        } else {
+            $sqlval['deliv_date'] = "";
         }
         unset($sqlval['deliv_date_year']);