The wrapper of a mov shouldn’t cause any issues in the import of PPro. The codec shouldn’t have issues either. I just did a test from AE 7 into PProCS3 and it worked fine. What’s the error your getting? If you need to use it ASAP and rendering it is an issue you can directly import the AE7 comps like any other piece of footage.
Import> *.aep file> choose the comp/s you want to work with.
Otherwise re-render a test with only a small section of the comp, by adjusting the end point of the work area with the n key to snap to the CTI (time indicator).
– Jon