Season2 implemented a lot of new categories, and the items were created for those categories from the start.
In Season1 they were put in two categories called Misc1 and Misc2. Now these two categories have been sorted to categories, like Wings, Waist and Cloak.
Some categories turn off other categories, like Cloak turns off Hair, Hair Preset, Hats and Hats with Hair, because they would collide with or hang out from under the hood.