Moving an animation

In Photoshop CC6 how can you move a whole animation ?

In other words how can one move all keyframes of a given layer all together from a spatial context (not a time context).

For the sake of an example let's say you have a layer representing a ball with 3 keyframes at
time-positions (seconds-x,y) (0-0,10 ; 1-0,20 ; 2-0 :40)

I need to move the hole animation by let's say 50 pix in the Y direction. I would end up with
time-positions (0-0,60 ; 1-0,70 ; 2-0 :90)

How can I achieve this.

Thanks