Hi. All of this updates bringing a lot of head ache. I dont know since what version of blender it happended but i found that there is no RESET option for the hook modifier. So when i want replace hook modifier with a bone the curve goes off its place and i cannot reset it
I found solution myself. There is no need anymore to parent curve point to the hook as we can do it straight to the bone, so no need to replace hook to bone in hook modifier