The Map Transfer utility in DAZ Studio 4.5 Pro is used to convert textures from one UV to another. In this instance I will use the example of converting M4 textures to the M5 genitalia UV, since that's what I've been using it for recently. I've used this to create M5 gens from the m4 textures I did for all of my character packs as well as to convert M4 Albane's gen textures for M5 use.
You will need:
The M4V4 UV Mapped M5 Gens (here: https://sites.google.com/site/crblackthorne/downloads )
The M5 Gens from DAZ3D (we won't be using them directly, but you have to have them to use the above)
The GIMP or Photoshop, for cleanup. Instr