HElp! Export > USB" and then it starts the export, prompting you that the folder already exists?

I exported a playlist, then deleted it off of the USB key.  now I am trying to re-export the playlist and it does not want to copy over.

I had added a track to the playlist, so (silly me) I deleted the whole playlist and thought I could re-export with the new track.  How can I re-export the playlist with all the tracks.