I have successfully exported songs to a project before, including the song i'm trying to export now. I have 3 midi tracks. they are all unmuted when i export to a project. Project page opens and exporting appears to be successful. After it's done exporting, i notice that one of the tracks did not export with the others. When i go back into the song, that track is muted. I unmute and try again - same result. Can't figure it out, but i am no expert at studio one. Very novice and have only been using for a couple of months. Any help would be appreciated.