PO PDF sent to supplier while PO status is still Pending Supplier Acknowledgment.

Summary:

I have a question about sending email notification with PO PDF to Supplier. If the PO specifies Communication Method set to Email, I found that:

Current fusion behavior:

1. If the PO specifies Required Acknowledgment set to None, the system will send the PO PDF to the Supplier once the PO is approved and its status is Open.
2. If the PO specifies Required Acknowledgment set to Document, once the PO is approved, the system will immediately send the PO PDF to the Supplier, even though the PO status is still Pending Supplier Acknowledgment.

The behavior I needs:
For point 2, I think the system should only send the PO PDF to the Supplier after the Supplier accepts the acknowledgment and the PO status changes to Open.