Symptoms

After deleting a client event from workflow, P&D can no longer package the workflow because it is looking for the missing event.  

Diagnoses

The client event still had “orphaned references” in the smartform. Knowing what to remove/fix in 4.6.9 is difficult, because P&D showed IDs of the missing artifact instead of the artifact name.

Resolution 

Installed the 4.6.9 P&D roll-up patch. After doing this, P&D gave more information about the issue and this enabled us to rectify the issue.