FlailingFog

You're supposed to edit the cf_m_body_AM.png file to make the body transparent in those areas. This will guarantee the baked files become transparent as well. If that isn't working and...

No it should have the "AM" part in it. If you check the last picture in https://github.com/FlailingFog/KK-Blender-Porter-Pack/issues/378 you can find the location of the Body alpha mask node. It should...

Does it do anything if you change the "Very Simple" option to ""Simple" or "No changes"?

That shouldn't happen (maybe the file wasn't saved before baking?), but if it does then you can resaturate any image with a button in the image editor. 

That's very weird because I remember making the driver while using the KKBP armature... I put a check to only add that driver if it's a Rigify armature. @ilcane87 It...

No, I don't think I have the reference file anymore. I also don't remember what the thigh03 driver was supposed to do... I just tried to make the knees thicken...

@ilcane87 I guess I have a terrible memory. I was really just trying to get the intense bent poses like abdata/studio/anime/00/floor/f_sadou_00_00 (or character > sitting on floor > tea ceremony...

@ilcane87 ~It's still not exact, but I'm much more satisfied with the new driver values in the latest commit (only applied if rigify armature option is selected).~ sorry found another...

Is "Show backface" in the material settings enabled? That's the only thing I can think of that would cause the atlas to look like that. Exporting then reimporting the fbx...

Just wondering, do the blue lines show up on the pngs inside of the export folder as well? Or do they only appear in blender?