In other words, loading the Search Preferences page deletes your Default Search Library and Preferred Library settings from the database, but this isn't obvious because the old values remain visible on the Search Preferences page after they're deleted from the db.
In other words, loading the Search Preferences page deletes your Default Search Library and Preferred Library settings from the database, but this isn't obvious because the old values remain visible on the Search Preferences page after they're deleted from the db.