Skeleton Rebuilder and Batch Baker

This 3dsMax tool serves two main usages :
1,rebuild skeleton structure after the character is animated,and keep the animation the same.
2, Batch bake and export animations.

For some projects, after we animated the character,we need to reconstruct the skeleton to a flat hierarchy, where all bones are parented to the root, that is when this tool comes handy.

The example original skeleton structure:

It will be rebuilt to a flat hierarchy:

All the animations are kept the same: