To merge listings from one SongBook into another you may utilize the export/import features available within FastTracks V2.

To do so...
 

1. Open the SongBook you wish to "merge" into another.
2. Click the "Export SongBook" button at the top of the window.
3. Provide a filename and folder for the resulting export file and click OK
4. Now close that SongBook and open the SongBook you wish to "merge" the listings into.
5. Click the "Import SongBook" button at the top of the window.
6. Locate the "Export File" you created in step 3.
7. The Export File will be analyzed for potential conflicts.
8. Click "Import Listings"

That's It!