Import photos to iPhoto from 'Photo Library'?

I recently linked my iMac to my iPhone. I imported the photos, but it only transferred pictures from camera roll on my iPhone and not photo library?

How do I import the photos I have in my photo library?

Not sure about this method, but it's worth a try.
Open iPhoto, click iPhoto on top of the screen, click preference, click general, where it reads "connecting camera opens" click the drop down box and choose iPhoto.
Connect the iPhone again and the iPhoto app should prompt you to import the images, I guess.
I haven't got that problem yet, but looking for an answer I came up with that.

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