So, I decided to have my Bridgeport family move to Sunset Valley. The only child in the family, Isabella, is still a toddler and will transition within 3 sim days, and she wasn't CAS created.
So once they moved to Sunset Valley, I did some checking around the house to see if I got everything situated, since I added a few more rooms to an already created house that came with the Generations EP. I look up and see one of the notifications talking about Isa and her IF, Pal. I zoomed in on her, and surprisingly enough she was playing with a freaking IF doll.
When she was in Bridgeport, she never had one, and I did play this family briefly after I added Generations. She's the only pre-generations baby with an IF. All the others never gotten one.
All the kids that have gotten an IF in my game post Generations, gotten them as a newborn.
Then I remember moving in one of the pre-made sim families, who also had a toddler, to Sunset Valley awhile back. When I made this family active, I find out that this child had an IF. I thought it was strange and didn't think much of it. So I wonder, if a family that has been newly moved into a neighborhood, who has a baby or toddler in the family, will the child in question automatically get an IF? Or if it's just a random occurence?