payment method appears in supplier site after it is disabled

Hello,

We disabled a payment method for Payables from the Payment Administrator. It is still active for other Products (such as Receivables, Cash Management, etc.). There were no supplier, supplier sites or PPPs using this payment method when it was disabled. There was one supplier site to which this payment method had been assigned before, but it was updated to another method before it was disabled. The payment method does not show up in most supplier and supplier site records, as expected. However, the supplier site that had it previously assigned, still shows that payment method as an option, although the corresponding box is unchecked.