It's definitely a different dog. The tan in Aces back leg goes all the way up, the one in the door video only has tan half way up his back leg.Soz I know I’m obsessing, but I can’t think of an explanation for the tiny puppy in a video that was after their holiday (both his hair and the poodle things hair cuts). The pup is smaller than Dolly and Diamond. I’m not sure Ace was every that small. ace has some distinctive tan markings, legs, snout, chest, eyebrows, so I guess time will tell.
I think Ace is dead or was too hard to handle once he got older and so they rehomeed. They've then just replaced him with a new puppy.