Hi Imran,
Points and Polygons can be seen as child objects of the axis that the object has. They are not concerned with the world axis.
At the moment you copy a polygon (or points) from one object to another, the pasted polygon (or points) will use the axis of the object.
If you like to have the copied polygon (or points) pasted where they were while you have copied them hold down the shift key as well to paste. (shift+command+v)
Let me know if that works for you. If not, I will make a screen capture for you.
All the best