What SBT does is ...
QtyOrd field (Quantity Ordered)
QtyShp field (Quantity Shipped)
Shipment process actually decrements QtyOrd while increasing QtyShp.
If you need to know the amount of the original order it's QtyOrd + QtyShp.
Hope this helps...
-- John Kiernan
"Maybe Amelia Earhart was just stealing the plane".