I just noticed something
rewatching legacy, and near the end when sam/quora knock rinzler off the ledge, rinzler loses both of his fighting discs. when clu and his gang chase after our heroes, rinzler still has no disks.
apparently, when programs lose disks, they lose memory, which might explain why rinzler turns tron at the end.
someone else has probably already noticed this but fifteen years later i just caught it
so maybe tron’s disk does get picked up off the ground in ares…