Can you play two different versions of sims 4 on one pc?

When you want to play that save, set Origin or EA App or w4hatever to load the game with no packs.

I don't know if it's exactly what mightysprite was mentioning but there's a blue link in my post above. It will take you to James Turner website. All it does is give instructions on how to easily disable packs using commands that can be done directly through Origin or EA app. Disabling packs is not permanent.