While scanning through my "Lost Episodes" book earlier, I came across a bit of information that I must have forgotten or overlooked in the past. On page 61, it says the following:

Soon TV Stage magazine would be reporting that Audrey, feeling it was impossible for her to work without rehearsing, tried to quit in her third week. Gleason refused. So she resolved to get herself fired. "Just before the show was scheduled to go on the air, she told him she'd go on stage, but not say a word. 'If you don't have to rehearse,' Audrey said, 'then you're good enough to get by without my lines, too.' Audrey really didn't live up to her threat, but as the show went along, she did feed Jackie a number of the wrong lines. When the show was over, Audrey was stunned by Jackie's reaction. Instead of firing her, the next night he tossed a party in Audrey's honor."

If this information is accurate, that means that the show in which Audrey was delivering the wrong lines was "Lost Baby."