Configuration entity types have a few extra options on their plugin definitions that relate to the exportability of the entities. By default, a number of configuration entity fields are persisted and exported. However, the config_export property needs be used to declare which other fields should be included in the export. For example, the NodeType configuration entity type defines the following:
* config_export = { * "name", * "type", * "description", * "help", * "new_revision", * "preview_mode", * "display_submitted", * }
Keep in mind that, without this definition, the configuration schema is used as a fallback to determine which fields to persist. If the configuration entity type doesn't have a schema (which it should ...
