This has happened a couple of times recently, and I'm not sure if it's new behavior or just something that hasn't come up before. A show with multiple showings (in this case, The Americans) suddenly decides to record all showings. I cancel the extra ones. TiVo then deletes the original showing that I left in the To Do List, apparently because it thinks I don't want to see it since I canceled it once.
Which means my only options are to clutter up my Now Playing with multiple incidents of an episode, or cancel the extras, wait for the original to vanish, and re-schedule it manually.
And this seems to be becoming a problem, because lately there have been a number of occasions where TiVo is suddenly scheduling all of a show, even though the Guide Data clearly shows that they're all the same episode.
What's up with that?