The development plan shall be filed with the city within a submittal period of one year after the approval of the planned residential zoning. The one-year period of submittal may be extended up to one additional year by City Council resolution. If the development plan is not filed within the submittal period, the zoning of the tract shall automatically revert to the prior zoning district effective at the end of the submittal, or upon denial or withdrawal of the development plan, if after the end of the submittal period. Planned residence zoning can be re-established by a new zoning procedure as stated in §§ 18.01 through 18.07 of this chapter.