A pose file will insert a complete material, I have read, even an unattributed one like the V2P4 lashes mistake. You are wishing to insert an entire channel? The content is not important for this function, but I doubt that it is possible. If it was, we could insert a completely new morph using a pose file. I would think you would have to do the reverse: Hack your new CR2 with a text editor and make a pose file for each of your replicants to provide each of their variables, to use on this. At least that way, you can experiment with your changes and still get your characters back. It is a lot of work up front, but it could reduce your need for stock cr2 to one. The load would be shifted to the pose library, but the content of these files is generally only the unique stuff and thus a bit smaller. As a pz2, MM4 will copy over new channels that are not morphs. Although it will batch delete morphs and/or all other channels with a single click, it will only batch copy channels at the group level. You could make your changes and pare a copy of the CR2 down to just what is new, change that to pz2 and batch copy those channels group by group. Not a single click by any means, especially if you are dealing with digits. I think your question is: will a python script add in entirely new channels (and actors?) ? I have no idea.