Well, I practice in Pennsylvania so I don't know what their particular procedures might require, but what I understood happened (and what would have happened in PA) is that the offense was adjudicated, the appropriate time period passed, the matter was dropped and sealed, and it is now closed and sealed.
In Pennsylvania, as in the case of a minor, for instance, if six months probationary counseling are completed and there is no further criminal offense, the matter is dropped, a petition for expungement is filed and the court is subject to a 'shall issue' rule at that point.
If the paperwork is processed properly, the case is expunged from the record.