Houses/Lots Disappear

I lost a 6-year save and rebuilt it only for it to happen again and again and again. I am at the point where it's virtually unplayable. Why do I keep investing so many hours into building home, making sims. BOOM, go to my lots and they all disappear? (INSANITY) This just happened to me AGAIN , tonight. With the NEW enchanted expansion! I am done.. I can't :(

People on other forums state that having to many sims or lots causes corrupted saves. When I want to replace all the EA house and add more sims using ONLY my EA PACKS. Like why have a gallery to share builds with no cc AND WHY have lot spots or the option if I can't customize the world how I want without fear of wasting hours for a lost save? 

EA if you are reading this, recreating this issue goes as followed from the many times I have done it:
- Go to gallery and replace all lots in every world (with the amazing creations made by fellow simmers) that say #Nocc . 
- Then do it again BUT for ALL the sims, adding more sims into every house and even making some homeless by evicting them.
- Then go ahead, when you can finally PLAY .... travel to a lot and watch the game die along with all the time it takes to do this. 

Like EJ Flambert said, " ...I really hope EA takes it seriously and fixes it quickly. I don't want more packs or worlds - I want a playable game!"
 PLEASE FIX THIS, STILL VERY PRESENT ISSUE EA! 😖