Chest with collectibles now empty

I am in the seccond gen of an legacy challenge. My goal is to 100% the game in this save. In the first gen I completed the tarot deck and the space rocks, I algo got really close with frogs and the posters. I was using a chest to keep those collectibles, and when A)my og sim died or b) my elder moved out. The inventory reseted, I saw it doing in the fridge, and this chest. But I also had a smaller box that didnt changed inventory. The inventory is not in the family household, or the Elder household. When o try to reload a formar save, all the 3 that shows is After this. And when i try to restore the save folder it has the saves from more than a week Ago wich is still missing the last item for both the collectibles but I don't mind having to get them again. I wonder if is possible to me to export the content of the chest from a save tô another?