Can you become a cop in IOWA if you were convicted of a felony and it was expunged?

10+ years ago a felony of forgery, but was expunged from record 5 yrs afterwards. Read somewhere that if it's been expunged, it never was - so if/when filling out application, does one put that they've never had been convicted of felony, or arrested? Or can they still see that on your record after it's been expunged?