AP Invoice Partial Receipt Billing Lines / Adjust quantity invoiced from amount received

Good Afternoon!

I am by no means a financial expert so I need help identifying if this is truly an Epicor issue.

I have a user in A/P who may receive invoices for less than the total PO unit quantity. When choosing the uninvoiced line item and adjusting the supplier qty field (to what was invoiced) the remaining items will show as completed invoiced in the PO when , in fact, the remaining to be invoiced should decrease.

Example:
PO in the system with an uninvoiced line item for item A with a supplier quantity of 5. We get an invoice for 2 for item A.
We create a line for a PO receipt and change the supplier qty to 2 to match the invoice amount and save the line. The PO receipt line then shows all 5 as completed invoiced when it should be 3 remaining to be invoiced.

Any ideas? I know it is a little bit of a muddy problem. We are on 10.1.400.16

What does the PartTran History for “item A” look like?