The enactment of this title shall not terminate or otherwise affect rights, variances and permits acquired or authorized under the provisions of any section hereby revised or repealed. Where a building permit has been issued for the construction of a building or structure, and for an authorized use and occupancy thereof, in accordance with the law prior to the effective date hereof, said building or structure may be in conformance with the approved plans and on the basis for which the said building permit was issued, provided construction of said building or structure is commenced within sixty (60) days of the effective date of the building permit and diligently pursued to completion. Detailed conditional use applications based upon concept plans approved prior to the effective date hereof shall be subject to the terms and conditions of this title. Upon showing an undue hardship, an applicant may be allowed by the city council to process such detailed conditional use application under the terms and conditions of the previous ordinance. (Ord. 194, 8-14-2002)