(a) Notwithstanding the provisions of any general statute requiring that an appeal of an administrative decision of an officer, board, commission or agency of a municipality be taken to the superior court for the judicial district in which such municipality is located, such an action may be made returnable to a judicial district as provided in subdivision (3) of subsection (a) of section 51-345 .
(b) Any appeal of an administrative decision of an officer, board, commission or agency of a municipality taken prior to May 24, 1985, otherwise valid except that such action was made returnable to the superior court for a judicial district in accordance with subdivision (3) of subsection (a) of section 51-345 rather than to the superior court for the judicial district in which such municipality is located, is validated.