There's a chance that that old couch just needed to be batch-fixed in Sims 4 Studio.
With that much CC, there's a good chance you also have duplicates and other old content that could pose a problem someday. You might want to consider reorganizing (as a way to find duplicates) and looking for other old, possibly updatable files. Anything Sims actually interact with might have had new interactions added and you're either overriding those or will eventually run into issues. Often a Sims 4 Studio batch fix is available for those.
