New mod for milestones disappearing/resetting

4/4/23 I was playing my Triplets. Got all Infant milestones unlocked. Swapped to their Grand Parents so they could sleep over and get to know them better. Realized .. they couldnt do the things they could at Home. Swapped back to main Family, They were like theyre brand new Infants except! They can not Trying new baby foods, since I had done that, they were eating Finger Foods. NOW I dont know HOW to Progress with them!!! The other milestones were re achieved. My Adult Parents had worked, Maxed their Career before having Kids , This too is GONE! This takes all the FUN OUT of this expansion pack. I am a Rotational player, like to visit other lots etc. can not do this for fear of them loosing all their progress! This is just Terrible.