Lost Captions when Transferring from iPhoto to Aperture

I had iPhoto 6 which I used for several years to store my photos. Upon getting Aperture 3 recently, I imported the entire library of photos into Aperture so I could have them there.

Since iPhoto 6 didn't support direct transition to Aperture, I needed to import them with the method of "Folders as Projects"

This worked for the most part, however I am facing the major problem that all my captions from iPhoto are lost in Aperture.

Is there any way to do a more direct import or to have the captions retained? Is there a method that can export them first from iPhoto so that the captions are tagged with the folder?

Please help.