First, they are not trumps records, they are the people's records and he illegally took ALL of the presidential records with him instead of turning them over to the national archives,
as every president since Nixon have done...due to the Presidential records act, which states the records of the president are we the peoples.
Second, the classified documents he received and gook, were NOT records he classified, these were records of the government originated elsewhere.
Third, without a record of declassification produced by trump, where all agencies holding the top secret records were notified to reclassify them...all in writing. NONE of that happened...thus, they were never declassified.
Fourth...what trump is in trouble for is keeping presidential documents, after being served a subpoena for them, and after lying on an affidavit that all records were returned.
Security tape showing him going thru and moving these documents he SWORE under oath he had returned them ALL....shows he obstructed justice, clear as day.