Back to Antonia:

Shoveling UVs back and forth between programs remains tricky, but I've managed to transfer them to the new mesh with the rebuilt eyes and brows and the one-sided lashes and to remap to closed eyelids without messing up anything important. So it looks as if I may be finalizing the mesh and UVs quite soon.

I'll keep you up to date.

-- I'm not mad at you, just Westphalian.