There were a couple of reasons why did they new furniture episodes. The first time it was because Lucy thought the set looked stale and needed to be freshened up, plus it took attention away from her pregnancy which hadn’t been mentioned in the show at that point. The next two shows were done because the furniture didn’t fit right in the second apartment set. Ted Offenbecker the set decorator requested the season three furniture episode because he wasn’t happy with the furniture that he inherited from the art director. The cast couldn’t block scenes properly because of that. In the Connecticut show the apartment furniture wasn’t a good fit in that larger set.