ProfessorI can't speak for Connectwise in particular (not familiar with it) but LogicMonitor recently added a Log tab to the Integration section that is very useful for troubleshooting. You may want to check that log for Active Status of "clear" and see the API calls being made by LM and the results. Generally REST calls would get a 200 status if successful and 4xx/5xx if there is a problem. With either status you can look at the response back from Connectwise which might give you a clue on the issue.
Also I'm pretty sure there are various situations where LM will not send clear notifications to integrations, like a resource in SDT or when it's deleted.
