How to setup physics assets on a character using a hidden mesh?

I’ve got a character based on a metahuman, with a bunch of pieces that all follow the Quin skeletal mesh, which is hidden. This worked great up until it was time to add a physics asset.

Any physics assets on follower meshes simply don’t show up. And the one on Quin won’t show up if the base mesh is hidden.

Is there a way to get it to show up on a hidden mesh?

I’m thought of using the mesh editor to delete the mesh, and make an empty mesh. But the editing tools specifically don’t allow this…

Help?