diff --git a/hooks/convert_bd_names_to_selector.py b/hooks/convert_bd_names_to_selector.py
index f96a0176..37a00916 100755
--- a/hooks/convert_bd_names_to_selector.py
+++ b/hooks/convert_bd_names_to_selector.py
@@ -248,18 +248,18 @@ def main(ctx: hook.Context):
         print(f"{migrate_script} starts to create backups and add 'kubernetes.io/hostname' to store the node name")
         for lvg in lvg_list.get('items', []):
             lvg_backup = {'apiVersion': lvg['apiVersion'],
-                          'kind': 'LvmVolumeGroupBackup',
-                          'metadata': {
-                              'name':
-                                  lvg['metadata'][
-                                      'name'],
-                              'labels': {},
-                              'finalizers':
-                                  lvg['metadata'][
-                                      'finalizers']},
-                          'spec': lvg['spec']}
+                            'kind': 'LvmVolumeGroupBackup',
+                            'metadata': {
+                                'name':
+                                    lvg['metadata'][
+                                        'name'],
+                                'labels': {},
+                                'finalizers': lvg['metadata'].get('finalizers', [])},
+                            'spec': lvg['spec']}
             if 'labels' in lvg['metadata']:
                 lvg_backup['metadata']['labels'] = lvg['metadata']['labels']
+            if default_finalizer not in lvg_backup['metadata']['finalizers']:
+                lvg_backup['metadata']['finalizers'].append('storage.deckhouse.io/sds-node-configurator')
 
             lvg_backup['metadata']['labels']['kubernetes.io/hostname'] = lvg['status']['nodes'][0]['name']
             lvg_backup['metadata']['labels'][migration_completed_label] = 'false'