Hey Rob
not sure im totally following where the animation is coming from, but if its an alembic geo cache from match move and you use the old skool projector node you should be able to stick the image to the geo with the UVs. under the projector node go to the tracking submenu. i know it looks like the same menu for tracking with a motion vector map but it’s not. line up your projector so its looking straight at your geo and add a keyframe.
HTH!
