I don't udnerstand why, after doing this thousands of times, I go to record my bass player doing the overdub cleanup thing, I use the markers, 10 second pre-roll like always, except when it goes into record, all other tracks drop out(mute), and all I hear is the track now being recorded. The thing I don't understand is why this happened, I didn't change any setting that I am aware of. Any answers out there? Thanks ahead of time!