Quote - That has happened to me when the "host" rig has a smart prop attached to it, and there is no mesh group to define it in the ummm "new" conforming mesh. Just erase the bone in the Pose room.
Or edit the cr2 so it has no smart parent thingies or compound conforming thingies, just the main figure, before using it as a rig in the setup room.

I firmly suspect Michael's ummm "thing" is a smart prop, hence the "bone" pops up when you use that rig for the conforming clothing. I don't use Michael, though, so I cannot be 100% sure that is the cause.
You should check the rig for any attached smart props and remove them, save that as a new figure, then apply it to the clothing. Or better yet, check the cr2 file in a cr2-aware proggie like cr2edit, or one of PhilC's python utilities.

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