Hi Elyssa, Thanks for your feedback! Currently, iClone has a brand new motion clip system. The Transition Curve that you opened, is designed for clip blending, in order to reach the smoother transition result between clips. So, we only left 4 types of Transition Curve for clip blending. And, we left the original 16 types of Transition Curve in every Motion Layer Key, please ref to attached image. Hope this answer will help you! Calvin Reallusion