If you have recordings at the time of the original showing the tivo will reschedule the lowest priority program, it will warn you of clashes but will still record the program at the 1st available opportunity, this even works if there is a power cut and things didn't record
There are two ways round this. If a show is part of a series and it is on at the same day/time every week then you can set up a manual recording. Works similar to the V+ or Sky+ way of recording but will not cater for a change in scheduled times.
If you have a series link and occasionally you would prefer it to record at a different time then click on the programme in Planned Recordings and select a different showing, if available.
I have done the latter this week for a programme on a Series Link as I want a couple of Champions League matches recorded instead. I also use a manual recording sometimes as the Champions League programmes last much longer than the game and they may conflict with a recording starting at 22:00. I manually record with a stop time of 21:55.
Nice to be able to post again, after their mistake (removed by the Censorship team). ¡No Pasarán!