Just checked using hert and hern again, herts working fine but hern still has the bug. Looked at it in tesedit and i think you need to move the nord male eyes head part data over, its still the bugged one
It hasn't unfortunately. I did fix it myself by moving the just the head part data for both genders, not the TINT assets, for all the vampire races from USLEEP over to the CR. Can't remember which races were affected but I know the nord vampire was one of them. Don't know if TINT assets need to be moved over though. I only checked the nord vamps in game and then saw the same issue in tesedit for most of the others.
Something i've noticed is that on a new game with the full guide installed, any NPC vampires not covered by the NPC mods have the grey face bug. I checked this with hert and hern and they both have it. Turns out the problem is disparity which has bugged race records that change the headparts for some vampire races, different from USLEEP. There's a thread on the disparity bug reports section that better explains this. Its also carried over into the CR.