Fun bug! If you edit an outfit, but the outfit loads before the
closet items do, then we clone the outfit to give it its new
identity and therefore forget about its item load callbacks.
Now we have a cheap hack to forward item load data to the
outfit's clones. Hooray! Hope this doesn't break tons of things!
That is, Neopets.com will raise an error when you try to equip a
Kyrii Mage Cape to a pet who's already wearing Ceremonial Shenkuu
Warrior Armour, since the armor restricts the Collar zone which
the cape occupies. DTI, however, would just hide the Collar zone,
as if it were biology. Now, however, DTI will unwear the armor
when you wear the cape, and vice-versa (despite the restriction
relationship being one-directional).