Changing Video Track Type (eg - from 'Standard' to

I recently accidentally created a sequence with mono audio and ran into an interesting issue when trying to change the tracks back to stereo.

I right clicked on my sequence and selected 'Modify > Audio Channels' and changed the sequence back to Stereo.

What this doen't do is change the existing audio tracks in your sequence from mono to stereo.

So, I right clicked and selected 'Add track' in the audio part of the timeline.

Interestingly, this created another mono audio track...

I was researching for a while on how to change the track itself from mono to stereo but couldn't find any way to do so.

In the end I discovered that the way to add a stereo track is to right click and select 'Add tracks..' (as opposed to just Add Track). Then you can select the 'Standard' audio track (this should be called Stereo.. unsure why it isn't as the rest are labelled Mono, 5.1, Adaptive etc).

My question is, how do you change the track type in an already existing track?