You did the right thing the first time when you contacted the Clerk of the Circuit Court. They have all of the information on pending and closed files and can let you know what the charges are and if they are related to the case from last year.
Sometimes cases are dismissed by the prosecution if they believe someone is going to be imprisoned in another state for a long while and/or get deported. Most of the time they retain the ability to refile charges within the statute of limitations or some other period of time depending on how the case was dismissed.
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