a bug when keyframe or normal behavior

ok, i put some key on some bones around five . And now i want to modify some key so i jump to the key and move the bones but before i keyframe it the bone go back to it s previous place so i cant key it. i can use auto key, but if auto key is not enable you can not modify key manually. did i miss something to put on or off

Unfortunately, this is a bug in versions of Blender other than current svn-trunk.

Occasionally, an internal setting to stop IPO-results from overiding unkeyframed data does not get cleared, resulting in transforms that “don’t get applied”, making it impossible to do anything without having auto-keying on.

I’m not aware of any workarounds for this except 1) using a newer blender version, 2) turn on autokeying.