Why do old deleted shows blend into other shows on DVDs?

When I play back a show I have recorded on a DVD, sometimes bits and pieces of old shows that I have already seen and intentionally deleted will show

When I play back a show I have recorded on a DVD, sometimes bits and pieces of old shows that I have already seen and intentionally deleted will show up and interrupt shows that I recently recorded, then go back to what I wanted to watch. I have cleaned the DVR, but it still happens. What can I do to remedy this? I would like to watch something all the way through without it being suddenly interrupted by pieces of older, deleted shows.

or:When I play back a show I have recorded on a DVD, sometimes bits and pieces of old shows that I have already seen and intentionally deleted will show up and interrupt shows that I recently recorded, then go back to what I wanted to watch. I have cleaned the DVR, but it still happens. What can I do to remedy this? I would like to watch something all the way through without it being suddenly interrupted by pieces of older, deleted shows.

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