Here is a scenario:

A destination path is created in the follow fashion. A group of users are notified of a problem. Five
minutes later an escalation notifies those same people (if the notice isn't acknowledged or resolved). Five
minutes after that the escalation is repeated.

If all three notices are sent, when the problem is actually resolved a total of three "resolved" messages are
sent, one for each notice. There should be some way to restrict this to just one resolved message per
person.