For multicam, due to the formats I shoot in being hard to decode since my GPU doesn't support hardware decoding of those formats, I typically start by proxying all my files, then I set preview quality to Preview (best) to enable the proxies (any quality mode below "good" enables them), then I do my syncing, then I edit my rough cut (only using the cuts and fades available in MC mode), then I apply color correction/grading (I usually set preview quality to best to use my original media during this step so I'm seeing the full color resolution of my 4:2:2 10 bit video), then I add any effects I'm going to use, and do my first test render, which I then watch in its entirety looking for mistakes.Then on my final pass, I'll add in any envelopes, non-fade transitions, etc. that you lose when collapsing the tracks in MC mode.

I'm going to make a screen recording and post it here so you can see what I'm describing, and maybe you can point out where I've gone wrong....

@MikeLV Looks like ripple is ON and causing everything on the edited track to move. That won't happen if you turn it OFF. It only needs to be ON if you are deleting an identical-length segment out of every track simultaneously and there are markers upstream from the deleted segment that you want to stay in alignment with the events that move when the gap closes automatically.

Also looks like you chose to keep muted event-splits when you did the expansion. You don't really need them but they might help maintain alignment without grouping if you are careful to only trim-drag clips and not actually move them. The layout might look confusing, however, if you don't trim-edit clips the same on both video tracks. I drop muted splits on expansion and group everything so if I move a split by mistake, intending to do a trim-drag, at least all the events move together as a unit... and only markers can get out of alignment.

For my workflow I'd use the selection tool from the bottom to grab all the events on all the tracks I want. Then from the top of the timeline select from the end time to the start time, hit delete and then push the events back together using autoripple (controlling how much is crossfaded if at all). Just making a selection and hitting delete with autoripple on would also likely work.

Personally I don't keep the muted events as I'd rather just expand them back out if I want to undo a camera switch.

@RogerS's process worked, nothing got out of sync doing it that way. If you don't keep the muted events and you have a mistake, when you expand back out to multiple tracks, you can't undo the camera switch because it deletes all those muted events.

even if muted events get deleted, you should still be able to drag the in/out points of the remaining events on either side of the deleted event to restore it.

Edit: I just saw your video. You never want to use auto-ripple with multicam editing.

@RogerS's process worked, nothing got out of sync doing it that way. If you don't keep the muted events and you have a mistake, when you expand back out to multiple tracks, you can't undo the camera switch because it deletes all those muted events.

Not true. You can drag the trimming on any visible event to adjust the switch points from one camera to another... just don't drag the position of events to avoid altering alignment.

I see what you mean now, that makes sense.

Regarding ripple, yeah I've discovered that! Although several people in this thread said to use it, and I just kept running into problems. It wasn't so much the ripple edit mode itself, it was how you select the events. RogerS method worked, splitting and dragging didn't.

treat the timeline as you would any other timeline,

That's where I ran into the problem. On a normal non-multicam-edited timeline, I've always been able to just split and drag and ripple moved everything. It doesn't work on a timeline that had multicamera editing applied, at least for me it doesn't.