(a) Notice. — No writ of preliminary injunction shall be issued without prior notice to the adverse party.The notice shall be served in the same manner as provided in Rule 4.4 by delivering a copy of the order to the adverse party in conjunction with a copy of the request for injunction. Said delivery shall have the same effect as the delivery and service of the summons under Rule 4.4.Proof of service of the notice shall be made in the same manner allowed for the service and amendment of the summons under Rules 4.8 and 4.9.(b) Consolidation of hearing with trial on merits. — Before or after the commencement of the hearing of an application for a preliminary injunction, the court may order the trial of the action on the merits to be consolidated with the hearing of the application. Even when this consolidation is not ordered, any evidence received in the hearing of an application for preliminary injunction which would be admissible upon the trial on the merits becomes part of the record of the case and need not be repeated upon the trial. History —Amended on July 15, 1988, No. 108, p. 449.