A system configuration snapshot encompasses the whole configuration of the Jira instance - i.e., all projects, all workflows, all custom fields, etc., are included. With a system snapshot, you can merge one Jira instance with another or promote configuration changes from testing to production instances.
6. If you want to see a preview of the snapshot, click Next (since CMJ 3.0). Otherwise, choose Create.
7. After clicking the Create button, wait while Configuration Manager creates a snapshot of your Jira instance. A message will be displayed, confirming that Configuration Manager for Jira has successfully created the snapshot. You will find any warnings that you may want to review in CMJ's Audit log.