Can a convicted felon who would have been convicted of a misdemeanor under Proposition 47, if it had been in effect at the time of the crime?

Proposition 47, a voter initiative, went into effect on November 5, 2014. (People v. Rivera (2015) 233 Cal.App.4th 1085, 1089.) Section 1170.18, added by Proposition 47, allows "[a] person currently serving a sentence for a conviction, whether by trial or plea, of a felony or felonies who would have been guilty of a misdemeanor under [Proposition 47] had [it] been in effect at the time of the offense" to "petition for a recall of sentence" and request resentencing as a misdemeanant. ( 1170.18, subd. (a).)