Nolle Prossed means dismissed. It seems like at the very least there was a clerical matter in your case. Importantly, you cannot reopen a 17.5 year old case as the time frame for filing such challenges is usually just a year. It does sound like you are the beneficiary of a clerical error. I would suggest you contact a local defense attorney to look into the matter. While you may not be able to reopen the case you may be able to apply for a pardon. This is a lengthy process that almost always benefits from the soft touch of an experienced attorney.
Answered on Dec 11th, 2017 at 9:43 AM