As I stated in my edit summary recorded so still exists All episodes of this series have been recorded and can be and occasionally are re aired or are otherwise available to view A recorded TV episode does not cease to exist once it has aired You edited the article to basically state that all episodes of the series are either no longer in existence none were ever recorded or that all recordings have been destroyed which requires a reference It is valid to state that any TV series is no longer airing first run episodes giving a range of start and stop dates if that fact is referenced but not that it has completely ceased to exist