Issue while Removing Banking details in schedule payments tab on invoice workbench

Hi Experts,

I came across a situation where when I try to remove the banking details of Expense Report Invoice .

Requirement :-

We are doing this because payment of same Expense Report invoice is rejecting at validation in PPR with rejection reason of 'Payable Document End dated' . In order to avoid the rejection , we are trying to remove the bank account and will pay the invoice though check(manual) payment.

But this solution is not working , because we are unable to remove the details.

Steps Taken :-

1) Navigated to invoice and removed the banking details on invoice on schedule payment tab at 'Remit-To-Bank Account'  (End dated banking details)