I have a question about importing 3dmax!

I import three 3dmax models in unity!They are idle、walk and jump!I have a question is that their rotation at beginning are different between idle model and walk action.I control the model to walk at my Joystick's rotation .But when I stop walk and idle model is running，the model's rotation are changing to idle's rotation .I saw the fbx file's(importing from 3dmax) transform column can not be edited.How to make the beginning rotation change for importing 3dmax model or action?Thanks!