Tom, first I want to thank you very much for your help, but I don’t think we’re on the same page.
That pre-comp that holds the replaceable media is supposed to be an adjustment layer and that matte is there to make the adjustment layer only affect the layer beneath inside that matte area (inside blue stroke).
If you add an image/video beneath it all you’ll see how the animation works.
I only left the adjustment layer toggle on for you to see how it all works. When exporting the MOGRT I’ll toggle it off so that it only works as a normal replaceable media placeholder, where in Pr you’ll replace with an adjustment layer (which I thought it would do the trick – but not).
I don’t mean to sound rude but I work with AE for over 10 years so I know how layer order works.
If you export the MOGRT (with the adjustment layer toggle off) you’ll see that nothing happens on Pr, even if you replace the media on Pr with an adjustment layer, although the effects on that replacement media layer do carrie over to Pr on the MOGRT.
Please let me know if you find a solution for this but I’m starting to think there’s no way to do what I need for now.
Thank you again!