I often will save the build as I go along, I'm not putting it in the Gallery, per se, just to My Library. But, even after I've saved, I sometimes catch a missed wall for wall treatment, or to my horror the repainted room is now over many parts of the exterior of the house. (A very old problem revisited, I fear.) So, once I fix the problem, I will save to My Library again. Many a time, I will use the Overwrite feature. I'm wondering if others are doing this, too. Only fixing the Gallery version they shared … I would certainly hope nobody is intentionally spamming, though.