Selecting a keyframe in the timeline should not select the entire clip

When I want to nudge one or multiple audio keyframes in the timeline, say to shift the start/end of a level change, I intuitively select the keyframes and then CMD+ arrow assuming it'll nudge the keyframes the same way you'd nudge a clip in the timeline, but instead, selecting a keyframe selects the entire clip and the nudge command slides the entire audio clip in the timeline.  It would be great if SELECTING A KEYFRAME ONLY SELECTS THE KEYFRAME AND NOT THE ENTIRE CLIP, so that nudging, etc. would work the same for keyframes as it does for clips.  I'm not sure if there's some reasoning behind why selecting a keyframe selects the entire clip, but if there is, I'd be interested to know.