The repeal of the ordinances, or parts thereof, specified in Section 20.2 shall not:
A. Affect suits pending or rights existing immediately prior to the effective date of this ordinance;
B. Impair, avoid or affect any grant or conveyance made or right acquired or cause of action now existing under any such repealed ordinance or amendment thereto; or
C. Affect or impair the validity of any bond or other obligation issued or sold in constituting a valid obligation of the issuing authority prior to the effective date of this ordinance.