How do i get faces.db from iPhoto into Aperture?

I converted my iPhoto library to Aperture about a year ago and when i go into Faces, none are there. I can start to add them to photos and the type-ahead works as though they're loaded, but the thousands of photos I did are not tagged.

I can find the faces.db and journal files in the iPhoto folder - is there some way to import that into Aperture so the tagged photos will be sorted by Faces??

Thank you,

Joe Alcodray