The security constituted by any standard security duly registered or recorded may be restricted, as regards any part of the land or real right in land burdened by the security, by a deed of restriction in conformity with Form C of Schedule 4 to this Act, and, upon that deed being duly registered or recorded, the security shall be restricted to the land or real right contained in the standard security other than the part of that land or real right disburdened by the deed; and the land or real right thereby disburdened shall be released from the security wholly or to the extent specified in the deed.
A partial discharge and deed of restriction of a standard security, which has been duly registered or recorded, may be combined in one deed, which shall be in conformity with Form D of the said Schedule 4.