I have already created a few animations (idle, run...) for a character that I rigged using FK, because I didn't know about IK at the time (I'm very new to animation).
However I recently learnt about IK with this video and I would like to add IK to my rig because I think it will make further animations easier. The problem is that when I try to add the IK bones to my rig now, it messes up the previous animations that I had already done using FK, since the IK bones do not have any keyframes to match the animation yet.
Is there a way to "convert" (this is maybe not the right term) my previous animations so that they are not messed up when I add the IK bones ?
Thank you very much in advance :)