As COR you should be able to move them around in the Position Manager screen. Drag the name tiles to where they need to be, then "Save Changes" on the bottom right. Be sure you're in the "Registered Positions" side and not the "Functional Roles" side.
It probably won't let you save if you don't have a "legal" roster (ie, a SM, CC, two more committee members).
As @skeptic said I'd just move the retiring CC to MC or Unit Scouter Reserve then let them drop off at recharter. They've already paid for the year, and you're not getting a refund.