DNSimple is my registrar and (was my only) DNS provider. Now that they're back up I've exported the zone file and imported it to route 53 for redundancy in case this happens again. I also I updated the name servers in DNSimple to be 2 route 53, and 2 DNSimple, in that order. Is that the right way to do it? Does the order of the NS records matter? I set them up so that they're in the same order in both places.