Confirm receipt notification sent even after invoice hold released

Summary:

Problem statement:

AP invoices were raised against one purchase order having one PO line.

The invoice went on "Amount Received" hold since the receiving was not done. And thus, the confirm receipt notification had all the invoice numbers listed as it was on hold status.

Later, receiving was done and holds were released on few invoices.

Next time when the "Confirm Receipt" job was submitted, confirm receipt notification still contained the invoices which were validated and this is not as expected.

Expectation is to see in the notification only those invoices which are still on "Amount Received" hold. Why are we still seeing the invoices which are in validated status (unpaid)?