Any development or enlargement granted a special permit by the City Planning Commission under previous Section 74-74 (Commercial Development Extending into More than One Block) prior to February 22, 1990, may be started or continued pursuant to that special permit.

The Commission may administratively, upon application, allow modifications of the special permit granted under previous Section 74-74 (Commercial Development Extending into More than One Block) before February 22, 1990.

In no event may the Commission grant a modification of a special permit approved prior to February 22, 1990, that would require additional bulk distribution among zoning lots or modification of the height and lot coverage limitations previously established. Any modifications exceeding the limitations set forth herein shall be subject to the provisions of the new Section 74-74 (Large-scale General Development).

No existing publicly accessible open area or other public amenity for which a floor area bonus or any increase in tower coverage above 40 percent of the lot area of the zoning lot has been received under previous Section 74-74 (Commercial Development Extending into More than One Block) prior to February 22, 1990, shall be eliminated or reduced in size except by special permit of the Commission pursuant to a finding that a proposed change will provide a greater public benefit in the light of the public amenity's purpose.

Any sign shown on a site plan incorporated as part of a special permit of the Commission under the provisions of Section 74-74 (Large-scale General Development) prior to February 27, 2001, may be erected and maintained in accordance with such special permit.