flatten clip (multicam) not working on audio

[Andrew C. Brinsmead]

I've just edited a 45 minute piece shot in multicamera; all cameras & audio have been joined together as multicamera clips (as this was essentially studio shot, these shots tended to be a couple of long takes for each sequence, so there weren't lots of individual multicamera clips created, just a few long multicamera clips).

When I've flattened the audio for an AAF export, Premiere Pro has repeatedly failed to flatten all of the multicamera clips; instead of selecting all of the multicamera audio edited clips and flattening them in one pass, I've had to go through, and manuallly enable and then flatten each individual edited clip in the timeline - and of course even doing this manual process, some clips have still been missed. 

Why doesn't Premiere Pro perform the flatten multicam process on all selected clips?

Tech specs

MacBook Pro (16-inch, 2021)

Apple M1 Max

64gb ram

Mac OSX 15.1

Premiere Pro 24.6.3 

[PaulMurphy]

When the audio of a multicamera sequence is unlinked from the video, the video retains its multicamera functionality, but the audio becomes a nested clip. This prevents it from being flattened.

To quickly identify and fix these orphaned multicamera audio clips, follow these steps:

1. Select all affected clips:
   • Search by Media Type (choose "Sequence") or Label in the timeline.
   • Click Find All to select all relevant clips.
2. Enable multicamera for the selected clips:
   • Go to Clip > Multi-Camera > Enable.
3. Flatten the multicamera clips:
   • With the clips still selected, go to Clip > Multi-Camera > Flatten.

[Andrew C. Brinsmead]

Thanks Paul, I'll give that a try!