(Treason had been brought in line with felony in 1945.) The 1967 Act abolished felonies and stated that all former felonies would be tried according to the rules of procedure and evidence that applied in trials and pre-trial hearings for misdemeanours, whether the felony had been committed before or after the Act was passed.
The shift in categorization from high crime to felony was enacted in 1945. The 1967 legislation eradicated felonies, stipulating that all prior felonies would be tried according to the procedures and evidence used for misdemeanors, irrespective of whether the felony had been committed before or after the Act came into effect.