Reoriantion of x-models and rig in maya

Game Asset Reversing | 3D Models & Animations

bobmorane:

Hi
as you know extracted x-models does not faced to world axis in maya . therefore the front of models does not aligned to Z axis . i wan to import models to game engines (unity) and if i rotate root of the rig (joint tag ) to face the skinned models to z axis then i will appear a problem in unity . the problem is rotation of imported models in transform component doesn't (0 , 0 , 0) for examples is (-90, 90 , 0) .
hence i want to orient rigged models to align to z axis in maya and then reset rotation to 0 , 0 , 0 .
HOW CAN FIX THIS ?