[BobbyDazzler]

Personally I'd just clean the session edit and not bother exporting. Hard drives are cheap.

But if you really want to: do a Save As, then clean up the session and remove unused audio from the clips list (this gives you a way to back track if you make an error), then do Save Copy In... and tick the audio files option so it re-creates all the audio.
Trash the original but don't empty trash until you check your Save Copy to see that it is totally self contained and has what you need.