So, I was just on Saturday in Sims days. My Couple had a scientific baby, twice resulting in 3 girls (which was great!) I immediately aged them up, since I hate the newborn stage, went in to build mode, created rooms and then went in to edit their outfits and they were newborn again. I went back to live mode, only to find my Sims back on Wednesday (my sim is in college and all of the work she already completed has been undone as well as the rooms I created.)
What the heck just happened??