During the 6 month ACD period the arrest charge and the ACD will show up.
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You do not indicate where you received the ACD. You have 6 months from the date of receiving the ACD for dismissal & sealing. Additionally they cannot ask about arrests only convictions
The advice I have given does not bind the parties in any manner and is merely given as a courtesy.
During the period your ACD is open, your arrest and charge will likely appear on a background check. Once your ACD expires, the charges should be dismissed and arrest taken off your record.