Nope. I can still interact with it, it just won't let me change anything. I think that it has something to do with tweens. Because it doesn't give me any trouble until I try to put tweens between the keyframes.
If you're talking about tweens in your main timeline, then you can just right click the frames within the tween and convert them to keyframes. Of course, you're gonna have to manually adjust the frame of the graphic for each keyframe.