House gone after saving.

I built a replica to a T of a house that i am purhcasing. I spent approx 9.5 hours on it. I logged on tonight to show it off to some people and when I went to the world and loaded into the lot the house was chopped in half and missing all of the furniture, floors, walls ect. It doesn't even look like it did at any point when io was actively building it. I noticed there was an update earlier tonight and apparently after this update all of my progress on this was gone. Not sure how this can be fixed. I tried loading earlier saves but it would not let me. It would only actually let me load the most recent save which is corrupted. Thanks EA.