After launching SkinGen, the micro normals disappear from the character's skin materials. This happens because the micro normal mask is getting de-referenced in the material editor. While SkinGen is active, the micro normal mask texture shows a warning logo. After exiting SkinGen, the texture is all black. None of the other textures are affected.

This issue happens with characters converted from CC3 to CC3+, characters imported from Daz using Transformer tool, and Headshot characters.

It does NOT happen with the included base CC3+ characters or characters from the Human Anatomy Pack (however for these characters the warning logo does appear while in SkinGen, but the micro normals remain visible and the original texture returns after exiting SkinGen).