"The following options in the new Advanced Overlay Editing window have been removed because the usage of these options has declined, or they have been replaced by other features:

The Motion tab. You can still add position keyframes to create the motion of the clips."

*Just not curved ones.

Why remove a perfectly useful feature for adding Bézier curves to the motion of an object. Please bring this feature back. Even your support pages path talks about Bézier curves, but their is no way to achieve this easily anymore. I was able to create complicated motion paths easily using the motion tab. Now it is a pain and practically impossible.