Duplicate detection displaying ID workaround needed

We're on 12.1.3 and using duplicate detection which works well except for when an expense report is partially approved and a -1 invoice is created.  It turns out that where the duplicate expense report is displayed it displays the id instead of the number.  The id isn't displayed anywhere else in Oracle so our users have no idea what the right expense report is.  We've been working the SR for months but Oracle development continues to say this is intended functionality and to log an enhancement request.  Creating a report or custom form where the users can enter the expense