Help with the animation window?

OK so I started using the animation window inside of unity so save time, I know how to use it except for one big problem I've been running into. So here's the problem, I'm trying to get a gate to move down, I already have the animation, and it works fine for the gate I made the animation on. The problem is that when I apply the animation to other gates the other gates move to the X and Z axis of the original gate(I only want to move it on the Y axis) So how do I only make it move on the Y axis? When I try to remove the key frames from the X and Z the whole animation gets messed up. Thanks!