What is the best way to manage dependencies between releases (e.g. fixVersions). In JIRA FixVersion A 2.1 has a dependency on another application B 2.0. Meaning, A 2.1 cannot be deployed to production until A 2.1 has been deployed. Thuse A 2.1 is dependent on A 2.1 being released. How is this tracked in JIRA?