Wrong.
No president ever has to or ever did file any paperwork to declassify anything.
That is because presidents are above any classified doc executive order, so they just all do whatever they want with classified docs.
Typically presidents never get a security check because they don't need one, and they can then confer clearance on anyone they want, like staffers, secretaries, cabinet members, lawyers, etc.
The idea a president has to follow his own executive orders, is silly.
Presidents never have and never will.