When making changes to the Invoice Posting Authorizer Groups, is there an automatic update task that can be run to update existing invoice posting proposals to display the new authorizer and update the Invoices to Authorize page?
I start by updating the Authorizer Group:

Then navigating to an existing posting proposal with pending authorization that is assigned to the same group:

When I view Authorizer Group Members, the changes do not seem to have been carried over:

The system will still let me authorize the posting proposal, however this invoice does not appear on Invoices to Authorize page:

The only way I can resolve this is by manually changing the authorizer on the posting proposal and pointing it back to the same Authorizer Group, but due to the volume of invoices that are processed, this is not really a feasible solution.
Whilst I appreciate that new invoices will reflect the updated authorizer group, we still need existing invoices to be updated when a user has left the business or responsibilities are being reallocated.
Has anyone else encountered this issue? If so, what have you done to fix this?