Hi Richard,
Yes, you are having exactly the same problem I had.
Here’s what I did that worked…
– I kept video and audio in the V1/Audio 1 track.
– I deleted all other Audio tracks
– I added a new Audio track
Then, when I put the next clip into V2, the corresponding audio went to A2 as well..
Hopefully that will work for you too.
Good luck.
Elizabeth