You forgot that in the final scene of Generations, Picard tosses it aside like garbage.Similarly, his Kurlan Naiskos has been rotated from his ready room on the Enterprise-D, to the ready room floor, to his quantum archive vault, to a shelf at his renovated home in Picard S2, and now to his desk. He started out the episode with a spring cleaning anyway, so it's funny how some things get passed around.