Victory is achieved on this. Though animators will hate it…
Export your genesis 2 figure from Daz Studio with the settings I have attached, and she will come into carrara as an obj file that has textures intact, and will render in global illumination.
You can also get it worked with a rigged figure by exporting as collada - but it came in as a mess of files, and the genital prop was locked to something, and I could not sort it out. But that -might- be a clue for an animator who needs… ‘adult’ functionality for whatever.
Now I can get back to sanity on some other project, the bug in my brain has been stepped on.
Obviously on this forum, while I can upload an image of my settings… you’ll have to trust me on the results and just test it yourself.
Notice how I am NOT letting Carrara know this OBJ came from Daz… things got really weird when I tried using the daz preset, but my OBJ export was different at that time too - so I am not sure which end of this process is the important part that fixed it…
(Now if I ever need this in a project, it will be like back in Vue 3 when the only method of import from Poser was obj, and so I had to be very particular about having all my things set up perfectly before taking them out of Poser…)