I've been monitoring our release burndown for several projects and am reporting to management the scope changes every two weeks - points completed, removed and added. I've noticed that for past sprints the points added is not the same number as previously reported going back 5+ sprints. However, the points completed per sprint is always correct.
The POs cannot explain the increase in story points, the issue navigator view doesn't show an increase in story points by the team re-pointing a story or the team bringing in new work.
Any ideas on what is causing this reporting issue?