How to setup (rootjoint pb)?

Hello everyone,

I've got some issues trying to make my character working fine in unity 3D.

I'm using a biped and as root (bip01) is inside the pelvis and animated I can't use it for rootJoint that needs to have no keys. Then I created a dummy called rootJoint and I linked bip01 to it. The problem arises when I import the fbx to unity, there's no rootJoint in my hierarchy, it begins by bip001....

What can I do to solve this problem? What did I do wrong?

Also, why my axis direction is screwed after skinning my character? Before: works fine in unity, after: global/local all screwed up.

Thank you! :)