Sorry Per but your dead wrong, we do it every week, we record a 3 hour program twice each weekend directly from our cameras into 3 editors plus 2 Xdcam decks that can record only 45 minutes at a time. When the footage from the Xdcam breaks we take the next clip make a cut in the multicam timeline and drag it over the angle or camera in the Viewer that needs to be preplaced, a small window pops up and gives us several options one of which is replace it. Simple as long as you don’t have to do this 100 times.