MultiCam Audio - Flatten (Disappearing Audio)

this is still an issue in 2024.

but making sure there was a camera on track V1 worked for a project I am editing today. I get this issue a lot, so will be interesting to see if that always fixes it.

Audio is no longer disappearing... however, they broke it in so many more ways

Another workaround is using Grave Robber to 'un-nest' the multicam audio, this worked much better for me.
https://knightsoftheeditingtable.com/grave-robber

I had the same thing happen, but just realized what the problem was for me at least.  Hopefully this will help somebody else.

For me, the problem was a result of mismatched audio.  In my case, my multicam sequence's audio was single track stereo. However, in the sequence in which the multicam clip was nested, it was somehow labeled as mono.  When I tried flattening it, it disappeared. 

To rectify this, I right clicked on the offending clip, clicked 'Audio Channels,' and made sure the audio wasn't mono audio.  You can tell it's mono if only the very first box in the matrix is checked.  To make it stereo, I click box [2,2] in the matrix and voila, the waveform turned stereo. 

Upon flattening the multicam, it worked beautifully.

Here's another workaround that actually worked for me:

1) Make sure the button for "Insert and Overwite Sequences as Nests or Individual Clips" is set to invidivual clips (should be white, not blue).

2) Position playhead at first frame of your multiclip, select audio so its highlighted

3) Squence> Match Frame (F Key) - This will open the clip in the Source window

4) Drag the audio from the source window to your timeline, replacing your clip with all the audio files within the multiclip

It's a bug and it's been happening for so so long

Ive called into support many many times over 7 years on this issue, and I've gotten everything from "we'll work on it" to "this is by design"

it's not by design, the video would disappear in that case, and also, the audio wouldn't playback inside the MC if this were design

I'm currently trying to climb the support tiers now and not having much luck...

A Year later and this is yet to be resolved!

I'm working on 15 multicams each with 4 cameras/layers of video. The only one with more than a single clip per layer, won't flatten.

Yes, there's still a bug in the latest version, 15.4.

Flatten audio that is in a multicam, and the multicam dissapears.

This is a big issue, because we have to flatten the audio before exporting an OMF. If we don't, the clips aren't trimmed and copied into the OMF.

I'm having this issue. have you found a solution??

Yes i also noticed this. When you have several clips on a track (in the multicam clip), then if you flatten, the audio disappears. If you cut to an angle that contains only 1 continuous clip it doesn't happen.