Problem is that eventually you will run out of Duplicates and then the creature is permanently dead.
You don't need a compound power. Resurrection is part of Healing.
If that's the case what is the point in having Duplication, Resurrection will automatically bring the individual to life. If that is what you are looking for, just have triggered healing with Resurrection.
Healing BODY 8d6, Resurrection, Trigger (Activating the Trigger requires a Zero Phase Action, Trigger requires a Full Phase to reset; When Character is Killed; +1/4), Reduced Endurance (0 END; +1/2), Expanded Effect (BODY, STUN, & END) (+1); Does Not Work if Character Is Not Attacked After Dying (-1/2)
I heard that there was a stipulation that it would not work if the character was not attacked after dying so I added that in.