I have a scenario where I need to Ship and Invoice a Sales Order via an import scenario. Occasionally I will need Qty Shipped to be different than the Qty on the Sales Order and I also will need to update the unit price on the invoice that is created. This will take 2 import scenarios because the unit price is not available on the shipment form. I have figured out how to get the shipment import scenario working.
However the import scenario I have built for SO303000 is adding a new line to the invoice, not updating the existing one that matches the item.
Any ideas what could be causing that?