In the event that property for which a development right has been conveyed pursuant to this article or for additional development rights have been acquired, shall have its allowable density of development altered by amendment to the underlying zoning classification, the following rules shall apply:
(1) If such amendment increases allowable density of land, the owner shall be entitled to the full number of units allowed by the amendment plus the number of development rights previously obtained by the conveyance.
(2) If such amendment decreases the allowable density of land, the owner may develop at the density formerly allowed if the affected land has previously obtained additional development rights prior to the effective date of the amendment.
(1976 Code, § 17-34) (Ord. 1064, § 5, passed 12-21-1983)