Can you sync the metadata from Flickr to Aperture?

Is it possible to sync the metadata from Flickr to Aperture without having previously uploaded the photos using the Aperture plugin?

I originaly uplaoded all my photos using the Aperture plugin but i had so many issues with it either deleting or re-orgaising my photos that I decided to upload everything manually. I would love however to be able to sync my metadata from Flickr back down to Aperture. Does anyone know if this is possible?

Thanks!