Provided that this section shall not apply to persons who have been in possession of a tenancy for more than three years or to any person who has acquired a right of ownership.

Exchange Subject to any orders that he may receive from the Commissioner, the Collector may allow any tenant to exchange the whole or any part of his tenancy for other land in the colony, and the land so taken in exchange shall, in the absence of any special conditions to the contrary recorded in writing by the Collector, be deemed to be held on the same conditions and subject to the same obligations as the surrendered land was held.