I just finished my sculpt and I exported it. When I imported it in Maya and looked at the UVs to check if they were there, they weren't. I tried the morph UV functionnality in ZBrush and everything looked perfect. The morph matched the UVs I had in the beginning. I tried with the MRG button in the Export sub-menu off AND on, but it didn't change anything. I even tried with SubTool Master, but it didn't work either.
If you guys need some visual on the problem, I'll take care of that on demand.
Thank y'all and have a nice day !