Multicam Flatten does not return the correct audio file

Hi there!

I am having quite a bit of trouble with Premiere's Multicam sequeunces and I cannot tell if this is a bug or not. 

I created a multicam sequence for a 7-Camera Zoom call that has 7 seperate cameras, 7 seperate audio files. I sunc those together in a timeline and used that to edit as a multicam. When I go to deliver, I can flatten the Video tracks and all edits are maintained, all clips properly selected. 

When it comes to flattening the audio sections, it only flattens back to A1, regardless of which camera is slected. 

Example in attached photos:

Track 1 is for reference, showing what the waveform for the A1 in the Multicam sequence is (P1).

Track 2 - I switched the MC audio clip to A4 which is someone's clean empty audio file at that same time (P2).

When I flatten Track 2, it returns back to A1 (P3) and not to the proper audio clip (P4).

Note for picture 4: I manually had to mark the clip, find it in the multicam sequence, copy and paste. 

I did think it was the stereo multicam I had, but when I recreated it with mono audio channels it always puls the A1 clip when flattened.

Is this a bug? Any help would be appreciated!