If I have a figure in simple bone weights/single skin, and I want to add a ghost bone to add some portable 'morphing' capability I can do that in the setup room of course.

However if I want to add weights to the bone in the joint editor I first have to hack the .cr2 and add my new bone in the bone map manually. Is this a bug/tbd in Poser or am I overlooking this nifty check box where I can specify I want the bone to be part of the bone map?