DB Sparking Zero - Shapekeys help

[fruztal]

Hello!
Soo i recently got Sparking Zero and wanted to see how easy it is to rip the models, so i opened up FModel and found that each character model are cut in many parts (head, body, shoes, accessory, etc)
all of the parts also have the same bones, but i managed to join all body parts into a complete model and got all the bones working.

Thing is, i also noticed that the head models have shapekeys, i often find shapekeys in models from other games but all those seem to work properly except for these
i already tried with 4 models and none seem to have working shapekeys



I even tried to move them without joining all body parts (just imported the head) yet it still doesn't work.
If anyone had a similar problem and solved it, can you help me??
i'll appreciate it alot

Thanks