Just picked up Umotion - Newbie Question on Pasting Start and Stop states to create clip- Melee Draw Sword

Just picked up the asset - Looks really good!  Questions:  (IK Setup-Humanoid-Auto Key=> Generate) -For first testing I took 2 Animations, One a Melee Pose Idle and the Other a Locomotion Idle.  

I created a new "Clip" and have both these animations imported.   I just want to start with the Locomotion idle pose state and end state be the Melee Pose State (Drawing a Sword Later).   When I select the Melee Pose Animation, Select the entire body, Change to my Clip and move to 2:00 and hit CNTRL-V to Paste it does nothing?   From what I understand  Umotion after this end state paste (and Beginning state paste) will create the clip with the humaniod moving from idle state to the melee ready to draw sword state?   I guess I am stuck on why I can't paste the beginning and end states?   Sorry, New to working in animations like this.   Excited though :)