Duplicated game entries

Hi, I was importing in “collections” the paths of games contained in my USB, but I accidentally disconnected power cord, then I restarted the process.

Result in the image: some entries are duplicated: how can I solve? Also resetting all, how to do it?

Go to “Settings/Playlists/Manage Playlists”, select the playlist you want to clean and then select “Clean Playlist”.