For the purposes of this Part, a person's conviction of an offence shall be taken to have been quashed:
(a) where the person was convicted of the offence--if the conviction has been quashed or set aside;
(b) where the person was found guilty of the offence, but discharged without conviction--if the finding of guilt has been quashed or set aside; or
(c) where the person was not found guilty of the offence, but a court has taken it into account in passing sentence on the person for another offence:
(i) if the person's conviction of the other offence has been quashed or set aside; or
(ii) if the court's decision to take the offence into account has been set aside.