My house disappeared?

Hello everyone

Today I moved my household to a new empty lot where I downloaded the shell of a house from the gallery and basically build a house from that - using my furniture and so on. It took me a while to decorate and in the process I saved my game multiple times.

After being done I started playing and I traveled to another lot with my sim. When I got back to the house, the lot was completely empty: no house and all the money for house and furniture gone. I tried exiting the game and restarting and the only thing that changed was that I was able to see the house from manage worlds (if I loaded the game and not resumed it), but when I tried to enter (both in play and build mode) the lot still appeared empty and when going back to manage worlds I couldn’t see the house anymore.

I wanted to add a few rooms which is why I sadly did not save it in the library. :/

Has this happened to anyone else before? Did you recover it?