Hi,
I wanted to share a script for After Effects I created a while ago. It imports all your c4d multipass renderings and creates a correctly layered composition. Furthermore you can select parent folders with multiple renderings. The script will filter out all unwanted files, import only the renderings and distribute them into separate compositions.
A more detailed explanation as well as the download link can be found on my blog:
www.felixgeremus.com
Cheers