Im watching someones tutorial and he does the exact same thing I’m doing,
he selects all of the left foot, does alt h to unhide everything. presses a to select all keyframes. copies them all. then selects all of the right foot and does ctrl v to paste, which works perfectly. but for mine it doesn’t.
Select all keyframes - ctrl+c and then ctrl+shift+v - animation is mirrored. But it’s seems like to work properly all bones should have keyframes - even if they are staying on place.