We are in a situation where we need to change the creation date of some JIRA issues, so that Greenhopper can generate more accurate burndown chart for the project.
The reason is we created large amount of issues during the sprint, and we want to move them into the start of the project.
We found a way to change the issue creation date by updating jiraissue table in the database, but burndown chart remains unchanged in Greenhopper.
Does Greenhopper keep another copy of issue creation date? and how we can regenerate the burndown chart if we change the issue creation date?
Will appreciate it if someone can shed a light on this.