1. Can you add/remove a bone from a model that has an existing envelope, without distrubing that existing envelope?
2. If you're working on a symetrical character... How do you save time and fix one side of the model and mirror the resulting weighting to the other side?
3. Can you move an existing bone w/weighting assignments, under the stack so to speak. So the mesh won't move, you're just repositioning a bone? (I need to move/rotate/scale the placement of my jaw which already has a good weighting assignment, can I do this without having to delete the bone and starting over?)
I'm looking to have an open/artistic workflow in the rigging process (one of the main reasons I switched to XSI) so any other tips you may add would be greatly appreciated. -Derek