What are steps/recommendation to handle the post-acquisition supplier management

Summary:

PO should be created with B supplier for goods belongs to A supplier. but billing should happen with only A supplier after post-acquisition

Content (please ensure you mask any confidential information):

Business is facing post-acquisition supplier management issue in Oracle Procurement/AP
Supplier B acquires supplier A. both shares brother-sister relationship.

Supplier A (acquired supplier) has Tax ID = T1
Supplier B (acquiring supplier) has Tax ID = T2
Procurement creates PO against Supplier B with goods/services legally belong to Supplier A
AP invoice comes from Supplier A (T1)
Oracle Payables validates supplier + tax registration consistency and rejects the invoice