iTunes 11 duplicated songs - duplicates have iCloud icon
After updating to iTunes 11 many songs in my music library have been duplicated. The duplicate songs have an iCould icon next to them in the songs list. If I delete the duplicate (the one with the iCould icon), that song is no longer available for me to download from the "purchased" section of the store. The only way to get rid of the duplicate is to remove the song from my song list (the one without the iCloud icon) and download it again. This is a lot of work for more than 100 songs. Is there a way to turn off the feature that lists songs that it things have not been downloaded?
iPad 2, iOS 5