Hi Subha,
There is a difference with Local and Global axes. At all depends on the orientation of the controls when the rig is built.
If you are animating the Body control, that is aligned with the world, so Local and Global are the same.
If you are animating the stretch controls, they are aligned differently, so the Y Local is the same as Z Global.
I think that might be what you are referring to.
Let me know if that doesn’t make sense.
