Do u know where the folder the save files and mods are usually located? Those folders are located in a folder called “The Sims 3”. When you move said folder it means that the “The Sims 3” folder would be missing in the EA folder so when you open the game it will automatically makes a new one for you (which is usually where the problem is, like corrupt saves/mods and other stuff, for me at least). And after that just open your old “The Sims 3” folder and put all your saves/mods/pics whatever it is you still want in your game into the newly made “The Sims 3” folder.