Copying photo's from PC to SD Card; crazy results!

I have a few family members in my contact group who don't live nearby.  I had a photo that included three of them so I cropped and saved from that photo so I would have individual pictures of each person, all in jpg format.
Next I connected the Hero to the PC and mounted the SD card, and transferred the pictures to the phone.
To be sure they were OK I opened each file using photoshop and they appeared to be correctly copied so I closed and unmounted the card.

Then I opened my contact file and began to edit these contacts in order to add the picture...
instead of showing the cropped image there were three copies of the original uncropped picture that I started with.  Thinking that I had somehow screwed up the works, I closed that out and went to "albums" on the Hero.  The pictures there appeared as they should; all three images were the ones that I had cropped using photoshop.

Any ideas as to what is going on here?