My issue is after this action. You now have a sales order with some back orders left over. When  you get the stock in and now want to fill the back order you need a packing slip to give to the warehouse. When you print this packing slip it has the original order quantities not the back order balance left to ship. Same with the pick list. The backorder balance shows on the Sales Order screen but doesn't print on the packing slip to include with the backordered items.