VERIFIED SOLUTION i
Product Feature: Contract Evaluation
If you don't wish the Contractor Access XML Agent to export for a specific Contractor then this [the Contractor Export Transformations screen] is the place to do it - just remove all stylesheets for the Contractor and then click on the Update button. If you don't want the Contractor Access XML Agent run at all for any Contractor then you should go to the "Scheduled Tasks" screen and click on the "Suspend" button for the "Contractor Access XML Agent".
UPDATED: September 26, 2017