Tvheadend

I've experienced this both before and after recording takes place. If a series is scheduled to record (either via series link or regex) and the time changes, the recording will update with the new name of the show at that timeslot, retain the old description, and continue to record even though it's not the show requested.

Screenshot attached for an error prior to recording. In this case, there was originally and episode of Bones scheduled (description still shows it), but it has been moved. The new, unrelated show will record. I see this behavior pretty regularly with late-night reruns that frequently change time slots in the US (Seinfeld, etc).