Don't ask, don't tell - S3-E12
Continuity mistake: When Miranda is speed dating, a bell rings and the man she's with shakes hands with her. In the following shot he is extending his arm and shaking hands again.
Continuity mistake: When the show starts, Carrie puts a pair of shoes in the suitcase, leaving a second pair next to her clothes. Shot changes and that second pair is now sticking out in a different position.
Don't ask, don't tell - S3-E12
Continuity mistake: When Aidan says he'll buy a love seat, Carrie stops fixing her earring and touches her face. When the shot changes she is fixing her earrings again. (00:18:51)
Don't ask, don't tell - S3-E12
Continuity mistake: When the fake doctor tells Miranda he always wanted to sleep with a stewardess she has her arms up and standing out over her left shoulder, but they disappear in the angle shot from behind.
Don't ask, don't tell - S3-E12
Continuity mistake: While at Aidan's workplace, when Carrie kisses her she places her thumb next to his mouth, then it jumps to over his sideburn and then it jumps to being on his neck.
Don't ask, don't tell - S3-E12
Continuity mistake: When the girls are in a bar, the people behind Miranda don't match between the first wide angle and the first close-up. Then in following shots it's fixed.
Don't ask, don't tell - S3-E12
Continuity mistake: When Carrie goes to see Aidan working, she crouches and talks to him face to face. Half a second later she is standing taller than him.
Don't ask, don't tell - S3-E12
Continuity mistake: During rehearsal dinner Carrie says something about kilts when a woman in blue and a man with a grey suit walk behind her. Shot changes to Sam and Miranda on the left, where the couple just walked by and they suddenly reappear repeating all previous movements. Seconds later, Sam stands up and the couple is sitting and standing up for the third time.
Don't ask, don't tell - S3-E12
Continuity mistake: When Miranda says she's going to date a doctor, Sam is drinking with her right hand and then putting the glass down, but the shot changes and she's using her left hand instead.
Running with scissors - S3-E11
Continuity mistake: When Sam asks the girls if they have had an AIDS test, Carrie's hand is on top of the magazine, but then it jumps to to the edge of the magazine.
Continuity mistake: When the dog runs away Carrie tells Big to go home. There's a man behind her with a blue shirt drinking. Half a second later he has turned his back.
Continuity mistake: When Pete the dog runs away, a woman in white trousers on the left suddenly appears between one shot and another.
Continuity mistake: During cocktails, when Charlotte appears Carrie takes a sip, but a shot later her arm is down.
Continuity mistake: When Sam has her smoothie-remedy in front, it has a centimetre of bubbles on top in the wide close-ups, but none in the wide angles.
Continuity mistake: At the restaurant, when the lawyer says goodbye to the girls Miranda's right hand is on the papers or behind the the table, this keeps changing back and forth.
Continuity mistake: When Miranda checks the prenup she turns the page and says "Nada!" then lets the page fall. Half a second later the page is turned again.
Continuity mistake: When Aidan's truck leaves, a woman on the left suddenly appears between shots.
Continuity mistake: Charlotte asks Trey for the guest list and he hands it to her wit his left hand. A shot later he holds it with his right hand.
Continuity mistake: Sam says "we have all!" and Charlotte is next to the counter standing sideways. She turns around and walks towards Sam. Shot changes and she is back by the counter repeating everything. (00:02:40)
Continuity mistake: When Sam asks her friends if anyone has had the bad taste semen problem, Miranda's mug is on the table. Half a second later it is close to her mouth.
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