LucianQueen Are you saying that after moving the folder, your saves, mods, etc. are still present in the game? If so, there are two possibilities: you moved the wrong folder, or you moved the right one but OneDrive downloaded a fresh copy for you.
If the latter is a possibility, pause OneDrive syncing and rename that same Sims 4 folder. Then see whether your old saves are available. To pause syncing, right-click the cloud icon that's either in the lower-right corner of the screen or in the Tray (^ icon) and choose whatever time frame you want.