momodot, do yourself a favor... once you get it all reinstalled and the way you want it, throw away those DAZ installers and make a backup of your runtime(s) after its all installed, on another drive, the same drive, or a CD or DVD.

Contrary to the idiocy that is the Millenium 4 series installers, you do not have to have those figures anywhere near your Poser.exe, or even on the same physical disk for that matter.

As for myself, with the V4 and M4 people, I bought them and their associated Triple-Super-Duper-Multi-PlusPlusPlus Morph packs, applied them, backed up the runtime folders and then ditched anything that was a .exe from DAZ, never to grace my drives again.
Obviously the morphs themselves, as well as the injections, are all there as well as the original figures and the original runtime structure.  I just then saved my own versions of the figures with all morphs applied, into a new runtime, and those are what I use and accept as default. I don't have to worry about injecting or un-injecting anything, because what I have in my Mil4 runtime is, for all intents and purposes, the only versions of the Mil 4 People that exist, and are complete. Makes it all simpler that way.