The cmapolicymigration script is not exporting any policies. The pw\pronto\lib\DataMigrator\logs\datamigrator.log shows the following exception:
This can occur if there is a monitoring configuration policy has an integration service entry defined. Modify the policy so that the IS entry just says --select-- and then rerun the cmapolicymigration script:
Open the CMA console.
Product defect QM001855007 has been raised for this and will be fixed in the next SP.