: Move all internal layers into the parent timeline with a single command, avoiding the manual process of opening pre-comps and copy-pasting layers.
: If both the pre-comp and the main composition have active cameras in 3D space. Un Precompose After Effects Plugin Free Download
is a paid script (~$40–50) from AEScripts. It duplicates pre-comps and makes them completely independent so changes don't affect the original. It is not free , but offers a free trial. : Move all internal layers into the parent