Both .csm and .asc files come from 3ds Max 3d modeling and animation tool, but both seems to serve a bit of different purpose. Nonetheless, it might be possible that some kind of export or transfer of the data is doable, but we have not found anything in particular about this subject. In case you require assistance with this export, it might be best to reach out 3ds Max online community or even Autodesk support.
Updated: August 11, 2023