(1) A document to be served in a proceeding must be filed and sealed.
(2) An application and each document filed with it must be served on each party to the proceeding within the time mentioned in rule 6.19.
(3) If a document, other than an application and its related documents, is required to be served, the person who files the document must serve a copy of it as soon as practicable on each other party to the proceeding who has an address for service in the proceeding.