We missed 4 episodes of a show for which we have a season pass. Recording history doesn't explain why they weren't recorded, in fact it doesn't show them at all. No other season pass is at the same time. No other season pass is higher in the list. No manual recording was set for the same time. The maximum number of shows to keep (10) was not exceeded. TiVo settings are such that if a show overlaps, it clips the other recording instead of not recording it. The only explanation that I can come up with is that the show moved to a different time or a different day of the week, but on the same channel. This has happened to other shows which recorded fine. Any ideas?