Drop Shipment Question NAV 4.0

nverma

Our client is on NAV 4.0 SP3.

A drop shipment was setup. SO was created, PO was created using Get Sales Order function(both the SO & PO had a QTY of 8). However, right before posting, the Qty on the Sales Order was increased to 10. SO, was shipped. System automatically, posted the PO receipt. On the PO, we ended up with the following values: Qty = 8, Qty. to Receive = -2, Quantity Received was 10, Qty. to Invoice was 8. Now, they have negative quantity on hand.

Why would NAV let this happen, when there is a link between SO & PO. I would have assumed that, system will only receive that quantity on the PO (8) and we would still have Qty. to Receive = 2.

What the best way to kit this?

Looking forward to your valuable feedback.