Backorder from ship confirm breaks b2b reservations and requires manual action
B2B make items are reserved to work order. On completion to onhand. Then pick. On ship confirm ... with confirm rule saying you need to enter quantities and option to leave staged ... confirming with null will retain the reservation and (optionally) have to create a new shipment.
But in case confirming a portion as the truck can't carry all ... it takes the shipped quantities (which is ok) and confirms that. But the backordered portion now looses the reservation. The split line orchestration will inform you that manual action is required, which actually means you have to go to pick and reserve screen to link the onhand back to sales order. Only then will it be processed in next pick release.