Ringtone sync FAIL

I've had an iPhone for about a month now, quite loving it. Today I decided to add some custom ringtones to it, so I went into iTunes and clicked the button to sync ringtones…

http://www.flickr.com/photos/45936054@N00/2887095052

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Really? They couldn't find any way to add a few ringtones without removing (erasing) all the music I already dragged over? Really???