Once you created an opening repertoire in Chess Position Trainer (or imported it from elsewhere), you can cross-reference it against the database of games that you played. Here is a little walkthrough of how to use this feature.
Typically I play a lot of games on ICC, which stores all my games in a PGN file.
By using “show novelties” menu, I get a prompt for a pgn file, and then – a list of games:
The new version of Chess Position Trainer is coming out soon, I can’t wait!