Thanks John
I have eyes, body, tops,bottoms, shoes, and then at the bottom i have mixamo rigs.
I select everything except the mixamo objects, then i choose Alembic+Delete’.
Then indeed i get a grey model with the animation, BUT…. I still have all the above (eyes, body, tops,bottoms, shoes) as separate objects, see first image image
The second image shows before i choose Alembic+Delete’.

