A point so obvious that none of his lawyers could produce evidence before a judge demonstrating the alleged documents had been declassified....
Trump has psychic powers. He just needs to think it and they are declassified.
Even if they are declassified, they are still government property, and there was a subpoena for the documents.
Trump moving them (regardless of whether they are classified or not), knowing that the authorities were coming for them under subpoena is him knowing that he is committing a crime, of obstruction of justice.
"Bad boys, Bad boys, Whatch'ya gonna do? Whatch'ya gonna do when they come for you?"
Problem as always with D Trump is that those around him, also go to jail. (or perhaps "instead of" rather than "also")
His staff that physically picked up the boxes and moved them are complicit with the crime.
I guess for them it was either:
1. Stick to the law and refuse Trump's demand and then get fired
2. Do what D Trump says, keep your job for a little while and hope the CCTV wasn't on. Then beg for mercy and sing like a songbird when they come for you. Trump of course will deny that he told his employee to move the boxes. He might even say he hardly knows this employee that this employee is an insignificant loser who he was going to fire soon anyway.
Oh the joys of wallowing in Trump's swamp.