Milestones resetting when switching families/rotational play

@musteni There doesn’t seem to be a rhyme or reason to my starred-as-new milestones. It definitely isn’t just autogenerated ones because it will be things like, “Learned to Clap” or the first fire one. I’ll be playing a household day after day and they’ll show up like that without me changing households or visiting with anyone. So I think while there might be some crossover with the disappearing milestone bug, they’re not necessarily the same bug.