20Saving existing rights of redemption
Nothing in this Act shall supersede or prejudice any right of redemption of feu-duty or casualty competent to a proprietor of a feu in virtue of the title thereof or otherwise at the commencement of this Act: Provided that when in virtue of this Act the casualties incident to any feu have been redeemed and extinguished, and the proprietor of the feu afterwards proceeds to exercise such right of redemption of feu-duty, the sum payable under the title shall be abated by the amount paid in terms of this Act for the redemption of any casualties which would have been comprised in such redemption of feu-duty, if the same had been carried out prior to the extinction of casualties in terms of this Act.