Is there a way to roll back to version 1?

[Reese]

You don’t need to restore a 1.x backup. It is still sitting there as 2.x creates a new folder and new files when migration takes place.

Like stated earlier, a simple forum search:

Rolled back to 1.61 - Now random tracks cause corrupt DB errors in Prime software

This makes no sense, but not in the way you describe it. The 1.x database is migrated to 2.x into a completely different folder and files. That migration is non-destructive to the 1.x database. If you install the old Engine all should be the way it was.