Skeletal Mesh Merging Tool

Does anyone know what happen to the
Skeletal Mesh Merging Tool Plugin?

I know there is the Skeletal Merging plugin but thats for setting up a blueprint character.
I need to merge some modular character parts so I can then retarget some animation onto them for use in a cinematic. retargeting the animation on 5 different character parts takes for ever and sequencer is not setup for quick animation editing with a blueprint character.

Any help is greatly appreciated.