ok, so i recorded a gig on my nh800 tonight. i was going through, editing the annoying trackmarks, and i came to one that will not me remove the mark? it just so happens at this time in the recording, my mic was unplugged from the unit. when the new track starts (the one that wont let me remove the mark), i had just re-plugged it in. could this be the reason for the error? if so, why does it do this?