Nonsense.
The National Archives and Records Administration certainly does, along with various government agencies, Federal law enforcement, and Justice officials.
And we know the documents concerned national security and military intelligence, based on the laws likely violated.
From your link:
‘The warrant indicates that statutes relating to espionage and obstruction of justice are the foundation for the search. Convictions under these statutes can bring fines or prison sentences.
One of the statutes, which relates to removing or destroying government records, includes a punishment of being “disqualified from holding any office under the United States,” according to the text of the law.
None of the three statutes — Title 18 of the United States Code, Sections 793, 1519 and 2071 — hinge on whether the documents in question were classified.’