This photo was downloaded from a photo subscription???

I am going through my 20,000plus photos doing a bit of house work and noticed on some in the info window that all the info has gone and that this message appears - "This photo was downloaded from a photo subscription" - the photos are in finder and were taken on my DLSR and uploaded to iPhoto.

Has anyone else had this problem or know why this is happening and how to fix it other than deleating the photo and re downloading it, which will be a real pain as it is happening to quite a few pictures