What if more fixes require a new game?

Yeah, I feel you. I just finished setting up my Uberhood only to see that earlier today. It took awhile to set it up & if sims go missing while I'm playing because they couldn't retroactively patch saves, I might just lose my mind. I think I'm going to hold off on really investing in gameplay for another week or two because I can't keep doing this every time they release new patches that require new saves.