Where any property other than the properties known as Ormond College the Scotch College and the Presbyterian Ladies' College is held upon any trust or trusts other than those contained in "The Model Trust Deeds of the Presbyterian Church of Victoria" or either of them, if such property is held on behalf of or occupied or used by or for the purposes of any congregation or the minister thereof, it shall be lawful for such congregation by a vote of the majority of the members and adherents thereof present in person or by proxy at a meeting duly convened for that purpose and with the approval of the General Assembly and of the trustees or a majority of them and of the person lawfully appointed as the ordained minister of such congregation, and if such property is held for or on behalf of the church generally and is not held on behalf of or occupied or used by or for the purposes of any congregation or the minister thereof it shall be lawful for the General Assembly to resolve that such property shall from and after the passing of such resolution be held upon the trusts of the said Model Trust Deeds or one of them and thereupon the trusts upon which such property was held previously to the passing of such resolution shall absolutely cease and determine, and such property shall thenceforth, but subject and without prejudice to any mortgage charge encumbrance lien or lease affecting the same, be held by the trustee or trustees thereof upon the trusts of the said Model Trust Deeds or one of them or any future alteration modification or variation thereof duly authorized by the General Assembly.