Yes you can... You must edit the file and change the "mtlcollection" (in the first lines) by "figure". Rename it as a pz2 and you have you MAT pose. Also, i know that if you take a MAT pose (pz2) and rename it as a material collection (mc6), you don't need to edit... It will works fine. I'm now rendering, so i can't check if you really need to edit the file to "convert" the material collection to a MAT pose. Hope it helps...