Supplier Purchase Order Acknowledgement for Canceled PO Lines

We've encountered some issues with Supplier Purchase Order Acknowledgements where the supplier seems to be able to acknowledge - actually try to make changes to a canceled line from the supplier portal to quantity, date and/or unit price.

There's no visibility to the supplier that the PO line is already canceled and there would be no need to acknowledge the PO line again.

Order of operations:

PO created and dispatched to supplier

Buyer cancels a PO line before the supplier is able to create an acknowledgement

PO is dispatched to the supplier again

Supplier then creates a POA, but can't see that one of the PO lines is canceled in the eSupplier POA pages.