DOC-12453 restore different storage engines (and fixes to Auto-remove Collections)

modules/learn/pages/services-and-indexes/services/backup-service.adoc

@@ -100,6 +100,10 @@ You can also search the repositories for individual documents that have been bac
 When restoring data from a backup, you can define filters to choose a subset of the data to restore. 
 You can restore data to its original keyspace or apply a mapping to restore it to a different keyspace.
 
+You do not have to restore backed up data to a bucket using the same  xref:learn:buckets-memory-and-storage/storage-engines.adoc[storage engine] as the original bucket. 
+For example, you can restore data backed up from a bucket that used the Couchstore storage engine to a bucket using Magma.
+
+
 [#archiving-and-importing]
 == Archiving and Importing