How to change a completed Sprint's end date once the sprint has been closed?
Basically I could not use Jira for two months so I added the stories and tasks retrospectively and set the sprint Start and End Dates for each Sprint then I started the Sprint, moved the Stories and Tasks into the appropriate status and Closed the Sprint now all the sprints show the same closed date, as below for July, not the data defined in the settings.
23/Jul/18 2:37 PM - 07/Sep/18 2:39 PM