21. When the possession of a derelict tank is finally terminated in accordance with the provisions of section 8, the tank shall be restored to the possession of the persons who were recorded as entitled to possession thereof in the record-of- rights referred to in section 22, or their successors-in-interestand any land possession of which was taken under section 6A but has not been previously restored under section 9B or section 9C or possession of which has been retaken under sub-section (3) of section 9B shall be restored to the possession of the persons who are recorded as entitled to possession thereof in the record-of-rights referred to in section 22 or their successors-in-interest and all rights in the tank including all rights to use the water for the purposes of irrigation which existed prior to the time when possession was first taken of the tank under section 5 or section 6 and all rights in such land which existed prior to the time when possession of the land was taken under section 6A or retaken under sub-section (3) of section 9B, as the case may be, excepting any rights for which compensation has been paid under section 14, shall be revived.