I'm in a Business Class car right now. Nothing was done besides the reupholstering. Looking at the seat back where the tray table and footrest are, the back of the seat still has the old carpet-textured fabric, and the footrests are still the same. The seats are still the same. The floor tracks look like they haven't been touched in decades, and the power outlets don't look like they've been moved or replaced, so the seats definitely have not moved.