Furniture disappeared from lot

Hi there! I spent a lot of time building a home and now I'm worried that I lost a lot of my progress because the lot no longer has furniture. Hoping this can be fixed and I can avoid having to start over so any help is appreciated!

So, here is what happened. I needed to build something large so I evicted a default sim family and bulldozed the lot. From some preliminary research, I wonder if this could be part of the problem. They did not die on the lot, I just moved them out. I also used CC and the moveobjects cheat, but this hasn't been a problem for other lots. 

I noticed the problem when I tried to move my family in. "Furnished" was not an option. I went to edit it from the world view and noticed that all of the furnished was indeed gone, although the building itself remained. 

I loaded an old save and I can see the furniture from the world map. But if I try to edit it, visit it, move a sim in, the furniture is still gone. I could have sworn I saved it to the gallery, but apparently not. If I do have to start over, now I'm worried that it will keep doing this. Even if I do save it properly to the gallery now, I place things in a particular way through moveobjects so I wouldn't want that to be lost every time I need to place the lot. Any recommendations for saving my progress or at least preventing this from happening again? Thank you!