So when I'm working on a song, and I've generated (and regenerated, and regenerated) all the tracks, and I hit on the perfect guitar solo, when I drag the guitar part into the "drag & drop" export box in the corner, it generates ALL of the tracks in the song, not just the one I'm trying to export.

Why does it do this? And is that something that could be eliminated in a future update? I mean, why waste the time generating EVERYTHING if it's only going to give me one track when it's done?