I have mad a stab at a fix for M4. In essence the idea is quite simple, I have made a pose file that alters the dial names for some of the the visim morphs in M4 so that they match the names of similar phoneme morphs used in V3. Presumably you should then use the same DMC file as you use for V3. I'm hoping that Mimic uses the dial names, rather than the internal names.

Save the "M4Speak.pz2.TXT" to a pose folder, dropping the ".TXT" part of the file extension. Load M4, make sure all the visim morphs are injected into M4, only then apply the "M4Speak.pz2" pose. Save M4 back to a pallet with a new name, then do what ever it is that you do in Mimic. It may work it may not, I am not overly confident.