Problem with armature and rigid body

Hello,
My problem is when I create a physics simulation with rigid body and I save it as key frames, but for Dota 2 (which I am creating the item for) the animation won’t work because its based on the rigged armature
How can I get it so the armature moves with the destruction?
The rest of my animations work but the destruction doesn’t.
Any help or advice on what to try?

Thanks