If a backup is in compressed and/or encrypted form, you can uncompress/decrypt the backup using the extract-backup action. This is especially useful when you want to directly access the backup data from a compressed and/or encrypted backup.
Example
mysql-zrm --action extract-backup --source-directory /var/lib/mysql-zrm/20061012232713
This will uncompress and/or decrypt the backup data and the uncompressed and/or unencrypted data will be available in the /var/lib/mysql-zrm/20061012232713 directory
Please note, there should be sufficient disk space on the local server for the uncompressed backup image.