Cross project queries allow you to search multiple projects or artifact types or both in a single query. With cross project queries you can quickly find artifacts of interest to you in multiple projects. By saving your cross project queries you can access them as you would any other saved query in Project tracker.
The non-common attributes between projects or artifact types are displayed with an asterisk mark.
Saved cross project queries are accessible like all other saved queries; from the Query artifacts tab on the Project tracker page of your project. To run a saved cross project query, click the name of the query. You can edit the cross project query by clicking Edit in line with the cross project in the Edit saved queries table.
For more information on saved queries see Save a query.