Imported mesh bone rotation problem

Hi, I imported a model from 3DS MAX to UE4 as Skeletal Mesh and it seems to work well but any time I try to rotate a bone (any bone ) the model flips like if he’s trying to do a handstand. I tried to change up-axis in FBX export settings, I tried to change rotation on import settings in UE4 and I visited tons of threads looking for a solution but now i’m stuck. I hope someone can help me with this.

Imported model:


This is what happens when I move a bone (excluding root which is the only bone that actually works well)


Here you can take a look to the model:

still waiting for an answer

fixed with that: How to solve [Warning Imported bone transform is different from original] error? - Character & Animation - Epic Developer Community Forums