Plot hole: When Carrie sits down to read Aiden's 'farewell letter,' she discovers he has left her legal papers instead. Miranda later examines the legal documents, and explains the terms at the restaurant. But Aiden has only just moved out that day, and had spent the previous night in the apartment next door. (This was made clear in the previous episode, when Carrie explains in voiceover that 'the next day, Aiden moved out'.) He has spent the day moving his things out; there is no logical way he would have had time to contact a legal firm, make an appointment, go to the appointment, make arrangements to deal with Carrie's apartment, and have complex legal documents drawn up and ready to give to Carrie. None of this could have possibly happened between the night before when Aiden decided to end the relationship, and the next day when he physically moved out. No additional time has passed, as Carrie asks him to stay 'one more day', implying this really is the day after the previous episode. (00:04:25)
Revealing mistake: When Charlotte is putting her diamond ring on in her apartment, there is a close-up shot of it. It is a large, circular diamond on a simple golden band. This is not the same diamond engagement ring she has been wearing previously in the series. That ring had two parallel silver bands, and the diamond looked slightly different. (00:10:10)
Revealing mistake: When Samantha is surprised at Richard's apartment by his assistant, she quickly throws her towel around herself to cover up. But the towel rides up too far, and you can see that Kim Cattrall is wearing tan or nude colored underwear. Soon after that, Samantha makes a comment to the assistant that implies she was nude under the towel. So the panties were probably for the benefit of the actress, to protect her modesty below the waist. (00:21:40)
Plot hole: When Charlotte places her ring box in front of Carrie on the table at the restaurant, there is a close-up shot showing that she is still wearing her simple gold wedding band on her right hand. The entire episode has emphasized that it's strange for Charlotte to still be wearing her diamond engagement ring when she is alone, since she is getting a divorce. So why is nothing mentioned about her continuing to wear her gold wedding band? That doesn't seem to be an issue, but wouldn't it be just as strange? (00:26:40)
Continuity mistake: When Carrie visits Charlotte she says "and for the record" and raises her right hand towards her forehead. From the opposite angle it's lowered.
Continuity mistake: When the jewelry clerk advises Charlotte what to do with her ring she extends two fingers, but a shot later she is extending all five.
Continuity mistake: Carrie says that Aidan made her keep the ring and Miranda is holding her glass. A shot later her hands are away from it. This swaps back and forth.
Continuity mistake: During breakfast Miranda holds the legal letter with both hands, but in the wide angle she holds it with only one hand.
Continuity mistake: Miranda folds and puts down the legal papers, but a shot later she is still holding them in her hands.
Continuity mistake: When the girls exit the restaurant the passers-by behind are not continuous between shots.
Continuity mistake: When the girls finish breakfast, Miranda puts the papers in the envelope twice.
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl