Merge pull request #1628 from StackVista/STAC-23332-document-delete-elasticsearch-indices-before-restore

STAC-23332 Delete ElasticSearch indices before a restore operation.

Author: LukaszMarchewka

setup/data-management/backup_restore/kubernetes_backup.md

@@ -646,7 +646,7 @@ To delete existing Elasticsearch indices so that a snapshot can be restored, fol
 ### Restore an Elasticsearch snapshot
 
 {% hint style="danger" %}
-**When a snapshot is restored, existing indices won't be overwritten.**
+**You must delete the target indices before restoring a snapshot. This will delete all existing data in those indices. The indices will then be recreated with the data from the snapshot. This step is necessary because existing indices cannot be overwritten during restoration, causing the operation to fail.**
 
 See [delete Elasticsearch indices](kubernetes_backup.md#delete-elasticsearch-indices).
 {% endhint %}