Problemswith the pivotin2dsprite, the pivotis not storedon the sitemoved.
I have the same problem with 2d sprite. That when I edit and you move the pivot, to add to the project, the pivot remains in the center, try to move it in all possible ways and keep, to add again, still in the center. The actually am using unity 5. Please help me.
And sorry if this is not the right option to request assistance or report a situation.