This is a consolidated report of completed sprints. This report displays the sprint name, start date, actual and planned end dates, and completed estimation points. It includes an archived view of all the completed sprints in your project, displayed in a tabular format.
Workspace owner and Admin can measure the project progress by evaluating the completed sprints and the total estimation points. They can also refer the Release Notes . Even the sprint owner and member can view the completed sprints assigned to them.View the completed sprints
Go to the Report module.
Select View by as Sprint Report.
Select Report type as Completed Sprints.
Click a particular sprint to view the sprint detail view.
You can sort the Sprint Name, Estimation Points, Start Date, Planned End Date, and Actual End Date.

If you are looking to reopen a sprint
Click the sprint name and navigate to the sprint dashboard.
Choose Reopen at the right corner.
Release Notes
All the details of the completed sprints are available in the Release Notes . You can view the sprint details like resolved and unresolved items, the completion date, and the status.
View release notes
Navigate to Report module.
Select Completed Sprints for Report type.
Select a particular sprint.
Click Release Notes button.
Export release notes
Release notes are used to track the progress of the completed sprints in the project. It displays the resolved and unresolved work items in the sprint. You can export the work items either as a CSV or a XLS file . Click Export in the Release Notes tab to export.