Invoice Approval Still Following Deleted/Ignored BPM Participants in Oracle Fusion

We are facing an issue in Oracle Fusion Payables – Invoice Approval.

In the BPM Invoice Approval setup, some Participants have been ignored and/or deleted. However, invoices are still routing approvals based on those old participant rules, as if the deleted/ignored participants are still active

Even after:

• Ignoring/deleting the participants in BPM
• Ensuring the invoice is newly created (not resubmitted)

the approval routing continues to reference those rules.

Any guidance or best practices to ensure invoice approvals reflect the latest BPM configuration would be appreciated.