Issue:

Navigate to Accounts Receivable > Customers > All Customers > Select any customer account which has settled large transactions > Transaction > filter with type "Payment" > Settlement > Undo settlement > Mark the records one by one

Actual Result:
Records are getting unmarked and as workaround end users have to wait long time for marking each records.

Customers have scenarios where they have to unmark settlement often in case of wrong credit card transactions, check is bounced etc. and end users are waiting for longer time to complete this process.

Expected Result:
Please improve the performance of the marking process, so that end users can perform the operation without spending more time on this process.