Period Close Validation fails on Import Revenue Lines

Summary:

We're using the RW UI now for Costing and in that we're having a difficulty identifying which transactions are causing the Period Close Validation process to fail for the source 'Receivables' where it recommends running 'Import Revenue Lines'. This is really odd because this is in a test environment into which transactional data wasn't loaded until May-26 and the error comes when the April-26 period validations are run. The ADF UI had a link to show which transactions were causing the issue but the RW one doesn't and when we try to find them directly in the Costing