IMO, No IT person in their right mind would do an untested update in “prime time live” situation.
Correct you are. Know what’s done at my workplace? I’m employed by a huge insurance company...$$ in/out is in the billions. I handle monthly financial closes for our Auto/Home/Fire division. ANY time there are problems with data, and it happens, everything is stopped and analyzed. There have been times it’s so bad we have to roll back the data to pre-close numbers and start over again. Any changes are tested in development systems, verified, and must be approved by upper management. THEN and only then we start from the beginning again. NOT IN THE DAMN MIDDLE!! That in itself tells me there’s zero integrity to the data/votes they tell us we have.