FBX Import

It is important to note the following

• FBX has a concept of item position separate from the animation of the item.
• FBX has a concept of poses, which store positions of item.
• FBX has a concept of skin cluster binding, which can be separate from poses and animation and non-animated position.

Layout only has one concept, the animation

Frames less than zero to support these FBX concepts that Layout does not support directly.

• Frame -1: the binding position (applicable when skin clusters are used)
• Frame -2: the not-animated position (can be same as Frame 0, but may differ)
• Frames < -2: poses (if any); each pose on a different frame.