Effect of conditional use. Any use for which a conditional use permit may be granted shall be deemed, for the particular conditional use that was granted and on the specific property on which that use is located, to be a conforming use in the district in which such use is located, provided that such permit shall be deemed to affect only the lot or portion thereof for which such permit shall have been granted; provided further that the change of ownership, occupancy or tenancy in respect of any conditional use shall require the application for, and approval of, a new conditional use permit in respect of the continued operation of such conditional use by the new owner, occupant or tenant within 90 days of such owner, occupant or tenant taking over the operation of such use; otherwise on the expiration of the 90 days the permit and conditional use shall cease and the property shall be restored to a permitted use in the district in which that property is located.