The Presidential Records Act (PRA) clearly states that "Upon the conclusion of a President’s term of office ... the Archivist of the United States shall assume responsibility for the custody," of Presidential Records. govinfo.gov/content/pkg/USCODE-2008-title44/html/USCODE-2008-title44-chap22.htm#:~:text=Upon%20the%20conclusion,of%20this%20Act.
It defines Presidential records as, "documentary materials ... created or received by the President," his staff, or anyone whose job it is to, "advise or assist the President," related to their presidential duties. govinfo.gov/content/pkg/USCODE-2008-title44/html/USCODE-2008-title44-chap22.htm#:~:text=The%20term%20%E2%80%9Cpersonal,transacting%20Government%20business%3B
Personal records are defined as, "diaries, journals, or other personal notes ... which are not prepared or utilized for," Government business. govinfo.gov/content/pkg/USCODE-2008-title44/html/USCODE-2008-title44-chap22.htm#:~:text=The%20term%20%E2%80%9Cpersonal,transacting%20Government%20business%3B
There is no bartering. No negotiation. One could see a disagreement on whether certain items are personal or presidential but that should be resolved, "upon their creation or receipt." Not at the end of one's term.
govinfo.gov/content/pkg/USCODE-2008-title44/html/USCODE-2008-title44-chap22.htm#:~:text=Documentary%20materials%20produced,be%20filed%20separately.
There is no world in which nuclear secrets, attack plans, or information about defense vulnerabilities could possibly be considered personal.