Either you're not understanding my point, or I have no idea what you mean. Your first post mentioned a 4 camera multiclip with 4 tracks of audio (1 for each camera). You said that you wanted to keep the audio as is and only edit the video.
I was suggesting that you lay the audio into the timeline separate because then it's not part of the multiclip which only allows for audio from one camera.
You mentioned that you were taking the audio from each camera, exporting it and bringing it back into FCPX. I was saying that's not necessary since the audio is already in your project. So clearly there is some element I don't understand about your workflow.
Have you already edited the audio from your original multiclip and now want to edit more, but only video? That's the only thing I can think of that fits with the other things you're saying.
Andy
http://www.timesavertutorials.com