This script have been used for a project on which I needed to simulate some destruction effects with MassFX and then import it in Unreal 4. Basically the script transfer the rotation/position/scaling of every selected objects into a single skined object where each bone represent the previously selected object animation.
Additional Info:
This script have only been tested on 3DS Max 2015
This script do not support undo operation, but work on a duplicated version of the original selected objects
Version Requirement: 3DS Max 2015