“Reversion to acreage” means the dissolution of a previously approved and recorded subdivision. A reversion to acreage shall result in the merger of all lots created by the subdivision and reestablishment of the lot lines as they existed prior to the subdivision. Any modification of lot lines or merger of parcels comprising less than the whole of the parcel originally subdivided, or establishing any lot lines other than those existing prior to the subdivision, shall be deemed a new subdivision and not a reversion to acreage. (Ord. 441 § 1 (part), 1988)