You can access these and remove any records that you have previously declared unique by accessing the 'Suppressed Groups' view from the DQ for Dynamics Home screen:
From this screen you will now be able to filter the records by Entity:
Now you have narrowed it down by Entity you can use the Search Option to find the record you are looking for:
Once you have found your desired record you can un-suppress it by clicking the red 'Duplicate' check box on the record.
This will open the following dialog box where you will be able to review whether or not you would like to mark the record as a duplicate.
Note: If you would like bulk un-suppress groups, contact DQ Global at email@example.com.