As instructors build matching questions for their assessments, they may come to the conclusion that their already defined pairs ought to be swapped. That is, the values already entered for the "choices" should instead be the "matches," and the values entered for the "matches" should instead be the "choices."
It's true that current functionality permits an instructor to click "edit," copy/paste the values into their new respective choice/match boxes, and then click "Save Pairing." However, a single-click "swap" feature would greatly speed up the process, especially if there are quite a few match/choice pairs to swap.
The screenshot attached to this JIRA is only one possible "vision" this new feature could take and am certainly open to other ideas. You'll observe the new "Swap" option sandwiched between the current "Edit" and "Remove" options.