Almost no camera supports putting images back onto the card.
In fact this is best discouraged since I've seen folk do that, take some pictures and then ask "what happened?" (to the new and or old snaps.)
Let's just say no.
I'm having a problem uploading photos from my hard drive back to the memory card. When I click on "send to" it looks like its happening, but when I select to see photos on the camera it says there is no file in the folder. I have a Sony DSC-W1 and use the Memory Stick Pro Duo 2gb.