The lack of episode data makes it more likely that the Tivo would record the episodes, not less likely.
Without episode data, the Tivo would record the epidodes assuming they were new. This would occur even if the episodes happened to be repeats of episodes already recorded. If the "Keep Until I Delete" and "Keep 5 episodes" options were set, this would prevent the Tivo from recording the newer episodes, even if they lacked episode data.
I'm not home now or I would have confirmed my error but I remember when I checked my "to Do" list, the episode name was included in the listing. surrounded by other listings (different times and channels) with the episode I wanted showing (I think it was) a check mark. I'm nearly certain it was simple pilot error now that it's been spelled out to me. I doubt that I even looked at the options screen when I scheduled the recordings. While the default is 5 shows and to save until space needed, I manually changed the status to keep until I delete after each show recorded. Hopefully I'll get home early enough to increase the number to keep and catch episodes 6 and 7 when they're rebroadcast. Thanks for the heads up!
Home now and checked. Indeed it was limited to 5 shows, but, another factor that is apparently "just the way the darn thing works" troubles me. I went back and looked at the recording history and, since I selected first run only, it indicated that the reason the rescheduled show wasn't recorded was because a same named show had already played EVEN THOUGH NOT SUCCESSFULLY RECORDED. No mention was made that it excedded the 5 show limit. Now I can understand that way of thinking, but apparently TiVo just assumes you don't want a show that's been shown earlier even if it was not recorded AND you have rescheduled it to be recorded.
So it appears the only way to get these two shows now is to have it record ALL shows and then in the To Do list, manually delete the many repetitions of those first five shows already recorded - a major PITA. Or, am I wrong - will TiVo check with what's recorded and not toss the baby with the bath water if i don't go through the schedule all and delete drill? I will play with it and see how its mind works, but since I really want these two shows recorded, I'll do it the long way now.
As a person who deals on a daily basis with useability, I find more than a few of the "features" of Tivo a bit lacking in same. :-( Don't get me wrong though - it's still way better than the Comcast competition