Been trying to figure this out for a while, I need the clips as individual quicktimes to track in PFTrack but couldn't find how to batch export the clips from a FCP timeline. I came up with the idea of sending to Color via xml, not applying any colour corrections and re-rendering from color. This gives a list of new clips (usually colour corrected) for fcp to read back in so was a good workaround.
I just found you can drag the sequence back up into a bin so each clip is a copy of the master with its own ins and outs. These clips in the bin can then be batch exported, renamed and kept in an organised folder.
There are 20 shots to track - I will organise these into the types of shot (ie. Park Wide, Park mid, Attack etc.) so I can track and render the 3D scenes in groups.