Hey Mike…
Assuming your not introducing some other secondary source into your multicam edit…
1) you’d almost never do an insert edit….then you’d lose sync, right?
2) as opposed to doing a traditional overwrite…if you simply go to the multicam-destination (edit) timeline….you can razor edit where you want to make the change…then right click the clip on the timeline and select a different camera from the context menu or park at the head of the edit in the timeline and switch the camera in the multicam viewer….(as I recall…I’m a lil rusty)…
sumthin’ like that anyway….
Alex Udell
Editing, Motion Graphics, and Visual FX