[PO] Receiving for PO with Status "Requires Reapproval"

Standard Purchase Order with 3 lines. I changed line 1 quantity. Header status changed to "Requires Reapproval". In normal scenario, I cannot do anymore Receiving activity as the status is not Approved. If my changes involved price and currency, receiving activity will generate accounting entries with wrong amount. A control is needed.

However, for a particular PO, I am able to perform receiving. The PO with "Requires Reapproval" appeared in the LOV when i tried to perform receiving. I can proceed further to next screen. However, the line i changed (line 1) is not appearing. Only the lines that i did not change appeared and allow me to do receiving. Why?

The reason being the PO is an consigned PO, which has consigned item (doubled check it from Shipment). System allows receiving for the unchanged line because receiving activity for consigned PO will NOT generate any accounting entries, no impacts. Furthermore, transaction price does not refer to PO, but BPA.