Export out only the Photoshopped Cleanplate section

 

Instead of exporting out a new clip that has the cleanplate area embedded, can I export out just the cleanplate photoshopped section?
I want to reinsert that section back into the same clip in AE so I can add moving grain to help blend the images.

 

The best way to do this is to render out the remove as normal, then use the matte from the remove layer to cut it out. You can then go ahead and feather and match grain on just the matted area.

If you specifically want the object that has been removed, you can render out the remove as normal, import it to your compositor and do a difference matte on the original footage using the rendered result. We had something similar to this in the old Mokey software, where it would matte out just the removed item.

Thanks. That helps!