For the purpose of carrying out and giving effect to the various powers, trusts, and provisions relating to the property now or which may hereafter be vested in or held by or on behalf of the Otago Presbyterian Church Board of Property, or the Presbyterian Church of Otago and Southland, exercisable under any Act or Ordinances by the said Synod of the Presbyterian Church of Otago and Southland, such Synod shall continue on the same basis as it existed prior to the said union, and in regard to the management or administration of such property shall, notwithstanding such union, continue to have all the powers, rights, and privileges now or hereafter possessed by or vested in such Synod under any Act, Ordinances, regulation, or otherwise, with supreme authority in such matters.