Sampling and Flattening Keys

A Motion is the combination of the Motion Clip and the Layer Keys. In order to edit the contents of the motion or merge the layer keys with the motion clip, you must use the Sample and Flatten commands.
( Watch Tutorial - Optimizing Mocap Animation )

* The Sample and Flatten features are available for G3 360 or G3 characters (including Human, Animal, Spine, and Wings) only.