I have a nice simple melody track, with no chords, that I want to convert to MIDI.

I select "Pitch to MIDI Convert" from the Audio menu.

PowerTracks says, "Current Track is not a mono Audio Track."

True enough.

So I click in the "Track Type" popup and choose "Audio - Mono."

PowerTracks replies, "Can't change track type if the track already has data."

So how do I tell Power Tracks to convert my Stereo track to Mono so I can run Pitch to MIDI Convert?