SAP Business ByDesign: Issue with PO Reference Overriding

Scenario:
We person a lawsuit (Customer AB) with 4 Purchase Orders (POs) crossed 2 years:

2024:

Document A (Aug 2024) – PO Ref: 1234
Document B (Nov 2024) – PO Ref: 1234
Document C (Dec 2024) – PO Ref: 1234
2025:

Document D (Jan 2025) – PO Ref: 5678 (PO notation changed)
Issue:
When generating an Excel study from SAP, each 4 documents (A, B, C, and D) present show the caller PO notation 5678, adjacent though documents A, B, and C were primitively associated with PO notation 1234.

While the invoices stay unchanged, the extremity idiosyncratic wants documents A, B, and C to clasp PO Ref 1234, portion lone papers D should bespeak 5678.

Query:

• Is determination a modular mode in #SAP Business ByDesign to forestall PO notation updates from overriding humanities records?
• Are determination immoderate workarounds oregon settings successful the study procreation process that could assistance clasp the close PO references per document?

Thanks successful advance!