Workflows are creating duplicate emails.

 So here is our situation.

We have a workflow that sends emails to our customers 30 days before a due date.  The problem is when this workflow is triggered it edits an opportunity record which triggers another workflow to send unwanted emails at 12:00 AM. I'm assuming CRM is modifying the CRM Adminstration section.

The email WF should only activate if the plPO_Meets_Contract_Requirements__ITAG picklist was changed to Accepted and dtPO_Reviewed_Date_ITAG does not have a value

This is our current WF rule condition.

IfNull(PRE('<plPO_Meets_Contract_Requirements__ITAG>'), 'Bollocks')<>IfNull([<plPO_Meets_C