Cannot make body parts invisible when using V4 LODs

lanterma

I'm running DAZStudio 4.6 on a Mac using OS X 10.8.

When I load Victoria 4 and use the "Base" mesh, I can click on the "eyes" in the scene view to make various body parts visible or invisible. But when I switch to any of the included LODs, such as V4_LOD_17K, all of the body is still shown, even even I click on the eyes to try to make individual parts invisible. And the entire mesh is included in my FBX exports when I include the "no hidden" option. (This is problematic because I'm trying to get rid of the tongue and teeth since I'm not using them.)

I've attached a snapshot showing the "eyes" deactivated but with the full mesh still visible.

Is this some weird inherent limitation of the LOD meshes, or am I doing something wrong?

Thanks!