Corrected entry: In the 20th Anniversary episode "Friends For Twenty Years" There a clip with an interview with Flick Scully With the Hollywood sign in the background and mentions she's been living with Michelle in Los Angeles since leaving Australia. Except When Flick and Michelle left they didn't go to Los Angeles, the moved to New York as part of a scholarship program for Michelle, And at no previous point has anyone ever mentioned to two girls moving to Los Angeles.
Corrected entry: In the episode when Karl Kennedy was taken to hospital after having a heart attack, he had a flashback of being with Susan. In this flashback, they were happily married and they talked about Drew and Libby. Susan had her new 'short' haircut. However Susan had that haircut done when she was on a split with Karl at the time and Drew was dead, so she should have had long hair in this flashback.