SECTION 1. Section 45 of Republic Act Numbered Two hundred and ninety-six, as amended is hereby further amended to read as follows:
"SEC. 45. Appellate Jurisdiction.— Courts of First Instance shall have appellate jurisdiction over all cases arising in city and municipal courts, in their respective provinces, except over appeals from cases tried by municipal judges of provincial capitals or city judges pursuant to the authority granted under the last paragraph of Section 87 of this Act.
Courts of First Instance shall decide such appealed cases on the basis of the evidence and records transmitted from the city or municipal courts: Provided, That the parties may submit memoranda and/or brief with oral argument if so requested: Provided, however, That if the case was tried in a city or municipal court before the latter became a court of record, then on appeal the case shall proceed by trial de novo.
In cases falling under the exclusive original jurisdiction of municipal and city courts which are appealed to the courts of first instance, the decision of the latter shall be final: Provided, That the findings of facts contained in said decision are supported by substantial evidence as basis thereof, and the conclusions are not clearly against the law and jurisprudence; in cases falling under the concurrent jurisdictions of the municipal and city courts with the courts of first instance, the appeal shall be made directly to the court of appeals whose decision shall be final: Provided, however, that the supreme court in its discretion may, in any case involving a question of law, upon petition of the party aggrieved by the decision and under rules and conditions that it may prescribe, require by certiorari that the case be certified to it for review and determination, as if the case had been brought before it on appeal."