As from 'the date of disestablishment first fruits in respect of any subsequent appointment to any ecclesiastical office in the Church in Wales, and tenths in respect of any such office, shall cease to be payable :

Provided that nothing in this Act shall affect the liability of any person who at the passing of this Act has an existing interest in the emoluments of any ecclesiastical office in the Church in Wales to pay tenths, but such tenths shall after the date of disestablishment be paid to the Welsh Commissioners or as they may direct, and shall continue to be so payable so long as such person continues entitled to such an interest.