GroupWise Monitor is not dependent on any other GroupWise agents, so you can upgrade the Monitor Agent and the Monitor Application to GroupWise 18 at any time.
IMPORTANT:If you are upgrading from GroupWise 8 directly to GroupWise 18, you need to understand that Monitor no longer relies on eDirectory objects for its configuration information. All configuration information is located in the gwmonitor.cfg file instead. See Understanding Monitor Updates
and Updating GroupWise Monitor
in the GroupWise 2012 Installation Guide before you upgrade Monitor from GroupWise 8 directly to GroupWise 18.
On Linux, the GroupWise High Availability Service (gwha), that works in conjunction with the Monitor Agent to automatically restart the GroupWise agents, has been made more secure.