I've been having lots of problems getting clean recordings with the 20.3 update and the old firmware in my scientific atlanta cable card, so I went into the upcoming episodes of a season pass and told it to record a 2nd copy of the show it already had scheduled to record earlier.
When I went back to check upcoming again, it had cancelled the 1st showing.
Is it supposed to work this way? At least when I went back into the 1st one and said "Hey you! Record this", it finally shows both of them with check marks.