I can't remember if it was Federal or CT law that basically said, if you are convicted of something that then is decriminalized, your rights can't be abridged because of that conviction.
If you know of any such law, please post the info...
CT statutes allow erasure of criminal records for decriminalized offenses...
Sec. 54-142d. Destruction of record of decriminalized offense said:Whenever any person has been convicted of an offense in any court in this state and such offense has been decriminalized subsequent to the date of such conviction, such person may file a petition ... for an order of erasure, and the Superior Court or records center of the Judicial Department shall direct all police and court records and records of the state's or prosecuting attorney pertaining to such case to be physically destroyed.
http://www.cga.ct.gov/current/pub/chap961a.htm