reconnecting audio sent to ST with video in FCP

Hello All, I have been sending some audio from FCP5 to ST for enhancement. When I finish making and saving the changes and return to FCP, the audio is separate from the video. Is there a way to lock the audio back to the video? Also, once I do reconnect the audio to the video (Gee, I hope I can), can I get the whole clip back into the browser for future editing? The clips are going to be cut up into smaller seqments and combined with other clips. Thanx Barry


G4 Quicksilver, dual 1 gig