No the audio will not be embedded / attached to the video anymore.
Best workflow.
1)Take video file with embedded audio into a video NLE such as AVID
2) export the audio track as wav or aiff
3) import into rx and work on it
4) render it back out with changes completed
5) import to avid and re lay on timeline
6) export timelineas a video again.
NB If youre in pro tools you can re export the video track with a new audio track natively within pro tools
Peter
Post Production Dubbing Mixer