@madsmarlow14 Yes, you are absolutely correct in that it was connected to moving the folder. If there is no Sims 4 folder in the Electronic Arts folder when you launch the game, a new one will be created. If there is no Electronic Arts folder in the Documents folder, such as the one you moved, again a new one will be created and the TS4 folder created within that.
When you moved the Electronic Arts folder back into the Documents folder, what did you do with the new one that had been created? You would have had a prompt to keep both or replace.