My meta-human has two heads (one live-link, one default). How do I hide one of them?

I have a motion capture recording of my head talking and emoting, and I’ve hidden the default, expressionless T-pose head. However, when I click the “Play” button, the other head comes back to quite comedic effect lol…

I’ve tried deleting the head, but that also deletes the assets my animated head is using. How do I get the 2nd head to go away when I click “Play” and when I eventually render?