I am modifying some of the rigging inside the autorig. I'd like to save that leg as a new digital asset. I am semi-experienced in digital asset creation, but I'm not quite sure how to get this all working. Is there any suggested workflow I could use to save out a new HDA and use that instead of the default leg?

I know it probably won't successfully update with the modify system, etc, but I really need to modify it, and hope to not have to do duplicate work on both legs.