I started out using MM4 too. But for Vic, I have two master files, head morphs ~ 22 meg and body morphs ~ 17 meg.
As I got additional morphs, I found that cut-n-paste was the most direct way to get the nose tip morphs, etc all together. I also have a code for the parts e- = eye, r- = ear, n- = nose, ... a letter dash gives more room the a real title. Now if only Poser had a readable font and a background with some contrast, I might could read the titles.

One thing about using MM4 to generate combination morphs, it does not recognize FBM set dials. No problem for the face most of the time, but a real problem with the body. Because almost every body morph can be set from BODY, it makes the setup easy, but to do a combination, it is simplest to just use Spawn in Poser. MM4 makes copying these to their own CR2 files easy and if you want to take the morph into a modeler to further tweek it, export to geometries, is safer for me than using Poser export.