docs: partial snapshot download docs

docs/administration/snapshot-management.md

@@ -20,7 +20,9 @@ Starting from Kura 5.1, the snapshot can be downloaded in two formats:
 * **XML**: The original XML snapshot format.
 * **JSON**: The JSON format used by the [Configuration v2 REST APIs and CONF-V2 request handler](../references/rest-apis/rest-configuration-service-v2.md). For example the downloaded snapshot can be used as is as a body for the [PUT/configurableComponents/configurations/_update](../references/rest-apis/rest-configuration-service-v2.md) request. The `takeSnapshot` parameter specified by the CONF-V2 request is missing from the downloaded JSON file, if that parameter is not specified, a new snapshot will be created by default.
 
-Pressing the **Download** button will trigger a dialog that allows choosing the desired format.
+Starting with Kura 6.0, it is also possible to download a partial version of the snapshot, which includes only a subset of the entire configuration: in the download popup, a list of checkboxes is shown, representing the list of all the service configurations that can be downloaded. By default, the complete set of configurations is selected, but the user can pick only the desired ones, checking only those boxes that should be downloaded. Then the complete or partial snapshot can be downloaded in XML or JSON format thorough the appropriate button.
+
+Pressing the **Download** button will trigger a dialog that allows choosing the desired configurations and format.
 
 ![](images/snapshotsDownload.png)