Christrianlov Pet Baby Creator. The pets don't even need to know each other, just pick the parents and the puppy or kitten appears on the lot. 

http://files.sims2graveyard.com/christianlov/

If all you want to do is add Bluewater Sims you only need to delete Bluewater then add it back in. The delete option will come up if there is more than one shopping district so just add one to Pleasantview. The same goes for Downtown.

The rug divider confuses my Sims. I used it to seperate a tile/rug section near a cash register and the Sims could not conduct business over it. The divider went in front of the counter and they could not check out. Once I deleted the section in front of the register they could continue with their purchase.