maybe it could be left haned to right handed. 3ds max is right handed.
you can transform this fact, toward of your need. You do not need to synchronize base axises as they are made of production. Just apply asunchronous inverting transformation after all of model space deeds. Like including post multyplying needed (asynchronus) transformation towards the very bone one.
(Oh, I must flip z axis to be x axis) = asyncrhnous standard post multiplication of all transformations.
.... in otehr words. if someone dances good, yet you want to dance with the inverse hand, what do you do? flip mirror tranformation afetr his deed... it is all there.
(imagine yoy can control your left hand and your girl is on your right hand, but, yet, you are able to issue stuff to your left hand only! and after it all has been issued to the left hand holding your girl, your right hand can perform will of your left hand if you refelct it, and that is the hand that pleases your girl)