You can actually create a partial backup through the UI: https://docs.splunk.com/Documentation/ITSI/latest/Configure/BackupandRestoreITSIconfig#Create_a_partial_backup
When you select a service to back up, ITSI also backs up the following objects:
-KPI base searches
-Threshold templates
-Teams
When you select a service to back up, you can choose whether or not to back up the following objects:
-Dependent services
-Entities that match service entity rules
-Linked service template
The dependency between the service and these objects breaks if you do not choose to back up the associated object:
-If you back up a service that has dependent services without also backing up the dependent services, the service will no longer be dependent on the services after restoring.
-If you back up a service without backing up the entities that match the service entity rules, the entities will no longer be associated with the service if the entities do not exist in the restored environment.
-If you back up a service that is linked to a service template without also backing up the service template, the service will no longer be linked to the service template after restoring.
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