preserve_existing

 action: index_settings description: "Change settings for selected indices" options: index_settings: index: refresh_interval: 5s ignore_unavailable: False preserve_existing: False filters: - filtertype: ... 

This setting must be either True or False.

If preserve_existing is set to True, and the configuration attempts to push a setting to an index that already has any value for that setting, the existing setting will be preserved, and remain unchanged.

The default value of this setting is False