Include Navigation Parent Columns
Indicates if navigation parent columns should be included on navigation views.
When NavigationPropertiesAsViews is set to true, this property controls if parent columns from the navigation property will be displayed or not on the view. It may be worth displaying them in order to take advantage of being able to filter based on information about the parent.
When set to false, the primary keys of the parent will still be displayed to allow for joining back to the parent, but other other columns will not be.