(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 from treason as a high-level offense to felony in 1945 paved the way for the abolition of felonies in the 1967 Act. This legislation then specified that all former felonies would be prosecuted under the rules and evidence used for misdemeanors, regardless of when the crime was committed.