I recently created several events in Luminate Online. I just tried to create a URL shortcut to one and the system could not find it as a link. I realized that there are also several other events missing from the link options. These events are active and display on the calendar on the constituent side of the site.
The list of events that is available in the URL shortcuts link is limited within a certain date range, but you can still manually create the URL shortcut (BB745172).