Aah! OK, that's understandable and easy. You don't have to manipulate the old "farmland track" to Zülpich Industriegebiet. The reason lies in the street from Nemmenich. Someone who mapped this before us did connect both ends at separate joints on L162. This is not "usual". I did it the "right way" and joined themn together in the middle. This should resolve your routing (could take a few days).
Kind regards, bye! :)