Here’s my understanding of how it works…you have to select a range INSIDE 2 outside keyframes, this is important so it only deals with the keyframes in your range.
If you use “relative” it will keep all existing keyframes, but reduce or increase them by a – relative – amount.
If you use “absolute” it will put the first and last keyframe in your range selection at that level and delete the rest.
I believe in the user manual, this is what they mean by “move”…although I’d call that adjust. Move to me means temporally …
It’s not pretty, but gets the job done…I really wish FCP would use in/out as more of a reference than selecting clips…too much mouse clicking.
-Jason