Invisible Head

[Faustling]

I love the Project Valkyrie mod, but it was a bit annoying to have a 10 year old running around with me, so I tried to improve him some. I used

placeatme

to produce a dupe, then

sexchange
setrace humanrace

before opening the Looks Menu to change the head. I couldn't do much with the body, she was still scrawny as a child, but I deleted the dupe and with a change of clothing, she became a rather exciting young woman. Pleased with myself, I saved and reloaded. Owen no longer had a head. No idea why. Piddling with the Looks Menu doesn't help. Anyone know what causes this and what I could do about it?  (I can't get Amazing Follower Tweaks to work, so that probably isn't the answer.)