Corrupted Lot Issues

I have this one lot in Willow Creek that I can't load, it redirects me to the map and gives me an error code and says to restart the game. I have tried to place a new lot over this corrupted lot from the map view but it also gives me the error code. The lot is completely inaccessible. 

I have been working on the same save file since 2014 and am PARANOID as heck that this one corrupted lot is going to spread and corrupt more parts of the game. 

I have done the following already; 

-Created a clean Sims4 save and transferred my old save files to the new Sims4 save (some have suggested this might help) 

-Repaired the game in Origin several times

Has anyone else encountered this issue and been able to find a fix? 

I am dreading the thought of having to possibly save countless Sims and Lots in the gallery and transferring them one by one into a new save, thereby losing all family trees and all relationships, but I am willing to do it if there's no other option. Boo 😢

Any help will be greatly appreciated x