The Runbook Server that you are uninstalling may be assigned to run Runbooks. If you plan to reinstall this Runbook Server ...

The Runbook Server that you are uninstalling may be assigned to run Runbooks.  If you plan to reinstall this Runbook Server on the same computer at a later time (for example, when upgrading), System Center Orchestrator can keep this association for you.

Also, removing the association will result in Runbook Instances data for this Runbook Server not being available in the Orchestration Console.

To keep the association, click Yes.

Otherwise, click No. The Runbooks will no longer be associated with this Runbook Server.  Orchestration Console will not display Runbook Instances data.