How to save current animation from previous animation?

I’m trying to figure out how to use Unreal Engine 4’s animation system, and so I figured I’ll tweak the idle animation to fit the kind of character animation I need. Although, when I did that, and saved, when I went back to check the animation again it reset back to its previous state. I’m trying to figure out how to save the animation after tweaking the pose, so that I won’t have to worry about it being overwritten again, and wasting my time.