Hey Jscomposer !
I too have a mac with logic pro for some scoring gigs ...
While the video management is wonderful compared to Sonar,
the workflow is so bad.. that in the end, I think I prefer dealing with the issues of Sonar,
rather than the ones from Logic.
As for re-exporting the video with audio, I do it in Microsoft Movie maker now, it takes 2 clicks,
and it works wonder. and it's free..
Now If I could find that codec+settings that would make Sonar snappier when dealing with video ...
Cheers !
V