Alert inventory report question

I'm trying to sort my alerts by department, then by node, then by alerts associated to the node...and I don't mean the alerts that are currently active, I mean alerts which are enabled per node.  So far I've got an SQL query which works somewhat, but is incomplete.  I can't figure out why some alerts are reported correctly (per node) but others are simply omitted.

Here is the SQL code I've got so far:

SELECT 
       AlertConfigurations.Name AS 'ALERT' 
       ,AlertObjects.EntityCaption AS 'ALERT OBJECT' 
       ,AlertObjects.RelatedNodeCaption AS 'RELATED NODE' 
       ,AlertConfigurationsCustomProperties.Alert_Type AS 'ALERT TYPE'
       ,NodesCustomProperties.Department AS 'DEPARTMENT'

FROM AlertObjects  
       JOIN AlertConfigurations ON AlertConfigurations.AlertID = AlertObjects.AlertID 
       JOIN AlertConfigurationsCustomProperties ON AlertConfigurationsCustomProperties.AlertID = AlertObjects.AlertID
       JOIN NodesData ON NodesData.Caption = AlertObjects.RelatedNodeCaption
       JOIN NodesCustomProperties ON NodesCustomProperties.NodeID = NodesData.NodeID

WHERE AlertConfigurations.Enabled = 1 

ORDER BY AlertConfigurations.Name, AlertObjects.EntityCaption