That’s the thing though, I don’t want to import/use the original footage.
I want to make transitions between the now stabilized/motion tracked versions of the clips, which are AE-comps. These are currently on my timeline in PP. When I select them, right click and choose “Replace with AE composition”, they are indeed replaced, but the AE-project that is created contains only these placeholders, not the original AE-comps from my sequence in PP.