i can't understand the order Maya uses to sort the existing materials, it doesn't seem to be alphabetical nor time related, and the thing i most wanted to do is to be able to sort that list myself. I would LOVE to know how to see what the order of materials is in maya too. Did you ever figure it out? I'm exporting models to udk and also Cry with 10+ materials but if I want to add or delete a material in maya the order changes. So when I export the model again I have to re-apply and guess which slots the materials go in. It's hair pulling stuff I tell ya. If I knew what the order had change to in maya I could calmly re-apply them in the engine without all the guess work. If anyone knows how to find this elusive order in maya please help.