nicmar

Hi!
Is it possible to lock the bone hierarchy for all frames? I'm a noob, but I find it confusing that if I'm on the wrong frame and decide to rearrange bones, it's only for this frame.
Also it doesn't seem like it copies the hierarchy of bones when I copy and paste between frames. So I need to restart everything every time I want to change bones.
Is it usual that you want to change the hierarchy during an animation?
Thanks! :)