Any I.T. Guy will confirm this.... data storage is critical...if there was a glitch it would have been noticed and corrected within days...not 5 months. If the admin had the texts stored there were numerous people assigned to that process and they have a methodology they follow which would never allow missing days of backup let alone 5 months of no backup.

Even a shade tree IT guy backs up sms for websites etc....and confirms them daily (alerts if failure)