Originally, Diana Hyland was credited for appearing in ALL 9 shows from season 1. She missed half of them, due to her illness, which eventually claimed her life. In half of those shows, there were originally scenes where they explained her absence, and even voice-overs from Hyland as Joan on the phone with Tom Bradford. During the summer reruns, Lorimar aired only the shows she did not appear in. Lorimar decided to go back and reedit the shows she did not appear in, remove her credit, and all scenes featuring said phone calls and voice-overs. These are the versions of those season 1 shows that have been in use ever since.
