The closed purchase order can be downloaded post upload to check that the order has one of the close statuses. Purchase orders with a header status of Finally Closed or Cancelled will not be downloaded since these cannot be updated by the close process.
If the status comes back as ‘Open’ the order may need to be submitted within oracle itself. This outcome is dependent on the configuration in Oracle. A description of why the change order has not been run can be viewed in the Oracle UI.