This was my workflow:
I captured 24PA footage in Premiere Pro.
After locking my final edit, I exported act 1 and 2 to Quicktime at 23.976 fps.
I imported the Quicktime movies into After Effects. When I created the Comp to hold them, I set it to 23.976 fps. This comp shows as 23.976 in the project window.
I set the Quicktime files to 23.976 as well under Interpret Footage, but they are still showing as 23.98 in the gray project window. I can’t get it to change.