I've created a bunch of Phonemes Shape Keys for my character. I unparented and re-parented the mesh to an armature. And this seems to have messed up the vertex assignments.
The phonemes are still okay-ish but I noticed that the there are unwanted vertices (around the eye) that are changing when turning up the shapekey value. Is there a way to "freeze" these vertices while activating my original phonemes shapekeys?
I'm so sorry I can't upload the file due to proprietary issues.
I reproduced the issue on the attached Suzanne head. The "Smile" shapekey involves vertices from the lips, and "wrong" vertices near the eyes. How can I keep the shapekey and yet exclude the eye vertices and make sure they don't interfere?