You don't need any new files, you don't even need to copy anything. Just use the "V3_DAZAddOn.mic" for V4 or M4. The mic file just provides a list of channel names for you to select from in the "Morph Injection Channel" window. As V3, V4, and M4, all use the same channel names (PBMCC_01 through  PBMCC_50), you can use V3 files for all those figures, pluss most other recent DAZ figures.