Once you are sur that all files that should be reference indeed are, you can delete the
dupes. A quick way to do it is to click on Check All, and then click on the Delete checked button
. If your results contained false positives
, you can check them, click on Invert check state button ,
and then the Delete checked button.
, and then click on the Delete checked button
. If your results contained 
,
and then the Delete checked button.