What about the Paste Insert option?
What I copy is staying in memory and when I'm in the middle of a clip the paste insert option is there, but as soon as I hit the little icon to take me to the end or beginning of a clip all the paste options disappear. When I move the CTI back to the middle of a clip, the paste options are there again and it works.
which PRE version you are using ?
I checked in PRE 11 , I am able to paste at the end or at the beginning of the clip in quick view using paste option and by Ctrl+V in Expert view.