I want to pan/crop a set of composited tracks.

If I make several tracks "children" of another track, then I have a "Parent Motion" button that lets me do track motion of the composited result. But Pan/Crop seems tied to events rather than to tracks.

I could do an intermediate render and apply pan/crop in another project, but it seems like there should be a better way.

Or, is there some way to export the Pan/Crop keyframes from one track and import them into another track, so all are panned/cropped in sync?

Any ideas?