Voucher Approvals not refreshing approvers after update

This is regarding voucher approval workflow in IFS10 UPD8.

When the workflow is being setup and the voucher is prepared, the approvers/approval groups are being fetched correctly.

However, after the approvers are fetched in the voucher approval, there is a possibility for the voucher preparer user to change the amounts in the voucher postings.

This doesn’t refresh the approvers under the voucher approval tab and the old approvers from the workflow doesn’t have the relevant limits to approve the voucher.
 

We are not expecting to provide the access to manually modify the approvers to the end users.

Is there any way without a custom event/customization to fetch the approvers again to the vouchers. (Perhaps something similar to Fetch Authorization Rule at Purchase Order)