Unfortunately even checksums won't help you if you mistakenly dredge up old but valid config. That doesn't mean they're not worth doing, but we don't know, due

Unfortunately even checksums won't help you if you mistakenly dredge up old but valid config. That doesn't mean they're not worth doing, but we don't know, due to a lack of detail, if Google already has checksums or if they would even have helped in this situation.