You don't know that. There might be an honorable Patriot in the Agency that kept a backup or two....
... and the most delicious part is, Obama doesn't know, either. :)
No one will ever know until it is searched. I would guess that only DJT could order that opened. I still believe most items were destroyed or stolen via the sandy Burglar method. They could be kept by numerous people but I doubt anyone is dumb enough to come out now. Probably holding for insurance.
One such example would be the Selective Service record with the “80” instead of 1980 or 2008 with the first part clipped and the second part inverted. There has to be a record if the was ever filed. If the paperwork is not present there would be a large whole in the records unless they never existed in the first place. There are logs, lists, etc.. that would back up this information. No one has ever bothered to look.