Keyframes gone wild

Yo, I’m pretty new to Toon Boom and I’m having an issue when if I change a keyframe which is before another keyframe. What will happen is that if I move a leg in one keyframe, it will then get moved in the following one in the same way and the same amount. This is on stopmotion keys by the way. The guy in the tutorial that I was working off, who was using the same rig, didn’t have this problem could just make new keyframes willy-nilly without having to deal with this. I’m not sure if this is a preference I ticked by accident or if I’m just doing something wrong. But if anyone knows what the deal is, let me know! Cheers!

Post a screenshot of the timeline showing the leg keyframes and the “following” layer.
Indicate in the screenshot which is which. This may help to figure out what’s going on.