» Tue Feb 01, 2011 3:54 pm
OK, it's starting to make sense. I seem to remember that hair is not rigged to the skeleton, but gets its position data another way. The other equipment all gets rigged to one of more bones of the skeleton, and will be positioned by them. The hat may have to make a trip into MAX or Blender to get some bone weights.
If I'm remembering correctly hair can be morphed to fit the shape of the head, so it can't have skeletal animation as well. Some hats are hair-like and conform to the head shape, and some hats are rigid, and skeleton-rigged. The latter ones will adjust equipment slot without anything but the CS change, but the former won't. It's possible to change a mesh to the other type, but that needs the modelling tool and/or conformulator.
Incidentally the same thing happens with hair, and you'll see "wigs" that are hair that moves with the body (generally used for long styles) and regular hair that morphs (generally short). Both go in the Hair slot, but they don't work the same way.