(1)The Ecclesiastical Commissioners shall exchange such property comprised in paragraph (1) of Part I. of this Schedule as is property situate elsewhere than in Wales or Monmouthshire, or is property issuing out of property so situate, for all property vested in them which is situate in, or issues out of property situate in, Wales or Monmouthshire, and which became vested in the Ecclesiastical Commissioners before the passing of this Act, and which immediately before becoming so vested belonged to or was appropriated to the use of any ecclesiastical office or cathedral corporation other than an ecclesiastical office or cathedral corporation in the Church in Wales, or the holder of any such office as such, and shall deduct from the property comprised in paragraph (1) of Part I, of this Schedule such sum of money as the Commissioners may ascertain and by order declare to be due by way of equality of exchange. Provided that if the money and securities comprised in paragraph (1) of Part I. of this Schedule are less than the sum to be deducted, the Ecclesiastical Commissioners shall be entitled to a charge on the property transferred for the balance with interest at the rate of four per cent. per annum.