Just be careful you don't make the mistake of dragging in an audio file from another folder and then go and clean up that other folder!
That's one mistake you don't want to make more than once.
The other one you don't want to do is open up your backup session and think that you are working on your backup audio files - you won't be. You will find that you are working on your original audio files in their original locations (if they exist).
Always tread carefully