Unity Animate keeps snapping object's x-axis back to origin

I'm trying to animate a cube moving along the y-axis. Root motions box is unchecked, and the cube in question is within an empty gameobject. Whenever I try to move it via Animate, the cube's x-axis keeps snapping back into its world origin. When I try moving the parent object to compensate, the cube changes its local x-axis to match with its world origin. And it's only the x-axis that's causing problems.