(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 change from high-level offense to felony in 1945 led to the elimination of felonies in the 1967 Act. This legislation then established that all prior felonies would be tried according to the procedures and evidence applicable to misdemeanors, irrespective of the timing of the crime.