No clue why. What version of iPhoto? The only thing I could think of is the file suffix. A while ago I ran into an issue where the file needed a ".jpg" suffix, NOT ".jpeg". Check it out, its worth a shot.
That is the problem, the scans that imported or edited via Adobe do not transfer, only those pics taken on a digital photo imported straight to iPhoto.
That is the problem, the scans that imported or edited via Adobe do not transfer, only those pics taken on a digital photo imported straight to iPhoto.