You signed the paper at your first hearing. As you know, the "followup" is just to see if you complied with the original order. Also if you failed to pay the fine, they will suspend your license.
As your attorney will know(or better know), you have to be notified properly. Your DMV abstract will reflect it. If your DMV abstract says you're suspended and notified by DC210, by law enforcement or order accepted by addressee, then you will be found guilty. Those are considered proper notice. If it's anything other than the above(DC225, order mailed, etc) the ticket will be dismissed for not being properly notified.

I will bet yours will say DC210 and it was signed at your first hearing when you received your first offenders status. The judge may or may not have said it in court but it should be in the documents you sign. That's why you read everything you sign. Not that you had a choice but just so you know all the stipulations put on you.

The DMV abstact will tell you everything.