This is what I am trying to accomplish:
A green cube at (0,0,0) - the green cube changes to red while the AnimeCamera and animation are active.
A blue cube at (0.-200,0)
Interactive (OrbitControls) ActnCamera.
Switch to AnimeCamera and scroll AnimeCamera -200 Y (is now looking at blue cube).
Switch back to ActnCamera from where AnimeCamera stopped and pick up being interactive.