If your records have an auto-entered serial number field, you can use that field in a self-join relationship to link the new record to the record that produced it through replication.
Then conditional format expressions can high light fields in the new record that exactly match fields in the originating record.
Is that close enough to what you need here?
You might set up your relationship and duplication scripts like this:
Gigs::_fkPreviousGigID = Gigs|Previous::__pkGigID
Set Variable [$PrevID ; value: Gigs::__pkGigID ]
Set Field [Gigs::_fkPReviousID ; $PrevID ]
Conditional formatting example. Say you have a field named Gigs::amount
A conditional format expression such as:
Gigs::amount = Gigs|Previous::amount
could specify a fill color and the Gigs::amount field will then be highlighted until someone edits the amount field to an amount that does not match that found in the originating record.