Re: Crossconvert 1080i/59.94 to 1080p/23.976?

We've run into that problem before as well. Our clips were quite isolated and small. We used Combustion for this simply because it did the speed changes a bit better then the Avid:

Count # of frames in 59.94 for each shot, say 90 frames for this example, so the shot is three seconds at 59.94.

If we were to remove theoretical pulldown from the above number we would end up with 72 frames @ 23.976

We sped up the original footage to hit 72 frames then re-imported the result into the 23.976 project.

This didn't work for every shot but we were able to repair a significant amount of them. Talking heads were fine, long slow pans were a problem because most basic comp packages drop frames to speed up a shot and we would get skipping from time to time.
If this had happened more often, we would have looked into better speed changing plug-ins.

Hope this helps.