The preliminary decision shall contain the text in full of any proposal and may deny or approve the proposal, recommend a marketing agreement, order, amendment, or termination containing other or different terms or conditions from those contained in the proposal; provided, that the preliminary decision shall be substantially within the purview of the notice or hearing and shall be supported by evidence taken at the hearing or by documents of which the Commission is authorized to take judicial notice. The final decision by the Commission shall set out in full the text of the proposal and the Commission shall deliver copies of the final decision to all producers and handlers directly affected by such final decision and whose addresses appear on file in the Department, on the day next preceding the day on which the final decision is issued, and to all parties of record appearing at the hearing, or their representatives of record. If the final decision denies the proposal in its entirety no further action shall be taken by the Commission.