I'm trying to hunt down some sprints that are appearing in the dropdown list as active, but I can't find them in any project. 2/3 sprints in question have no issues assigned. One sprint has issues assigned, and they're all resolved, but I still can't find the actual sprint in any project to close it. Both the board and the backlog for that project show no active sprints. I have administrator access so that shouldn't be the issue.