How to regenerate the approver list for a purchase requisition after manager changes?

Is there a way to reset the approver list generated when a requisition is created?

We have a scenario where a manager was reporting to the wrong person on their HR record which added two additional approvers to the approver list.

Requestor → Manager → additional approver 1 → additional approver 2

It should be:

Requestor → Manager

After the HR records were corrected we tried to rewind the workflow to the build the approver list activity but it just moved the approval to the next approver, skipping the first approver.

We have now asked the requestor to cancel the PO and create a new one but would like guidance on how to deal with these cases in the future.