You *probably* want your multicam sequence to be multichannel, such that A1 routes to A1 etc. Test, test test though.
Whenever I tried to emulate avid style multicam audio workflows it fell apart when flattening the resultant edit, so have tended to edit with raw audio & multicam Video. As these have mostly been sit down interview style it’s pretty easy.
Have not done a typical entertainment style multicam with multiple audio isos. Not sure it’s possible. Be glad to hear news to the contrary.