What do I need to setup to fix troublesome A.R.T. Mannequin Auto Hips?

No problem about the video. However, I’m feeling rather incompetent right now. Where do I find the list where I delete them? I’m looking at the list view for the rig in maya and I’m not finding anything called ik_root.

Edit:

Oh. My bad. Supposed to look in the export file. Let me give that another go.