Please follow the upgrade instructions in the GreenHopper Installation and Upgrade Guide, plus note the following:
GreenHopper 5.9.8 is only compatible with and higher.
If you are upgrading from GreenHopper 5.8.3, please:
Before you begin the upgrade, please check for known issues. Sometimes we find out about a problem with the latest version of GreenHopper after we have released the software. In such cases we publish information about the known issues in the GreenHopper Knowledge Base. Please check for known issues and follow the instructions as necessary.
If you encounter a problem during the upgrade and cannot solve it, please create a support ticket and one of our support engineers will help you.
In addition to the above, please read the GreenHopper 5.8 Upgrade Notes and the Upgrade Notes for every version you are skipping during the upgrade. The complete list of Upgrade Guides is available here.
Please re-index and re-start JIRA after upgrading to GreenHopper 5.9.8 from GreenHopper 5.7.x or earlier.