Unity model not exporting with proper rigging

[BillyBnMOfficial]

I've exported a model with Assetstudio with every mesh and every bone but each time it would never actually get the rigging on one specific area. Does anyone know where to fix something like this?

[The Prawn]

Which game are you trying to extract from? I have noticed sometimes that extraction can vary between games and such.

[BillyBnMOfficial]

Nickelodeon All Star Brawl, I tried this with a few characters but not everything would move in pose mode in Blender

[The Prawn]

Ah yes, this has happened to me fore with that game as well. Sometimes the rigging won't export at all on certain models that have no real weight dependencies. Like if the rig has a solid area that isn't bendy with its skinning, if that makes any sense.