Can't transfer photos from computer to iphone using iPhoto
I've seen instructions about choosing a folder in itunes under the photos tab and transferring pictures that way. However, if I do that, it erases all the photos on my iphone that have been transferred via iphoto.
I have my photos organized in iphoto and want to keep that organization. I simply want to add some photos from my computer to those albums. It works fine on the computer--iphoto has no trouble bringing them in and keeping them in what ever album I want. The problem is that iTunes will not transfer them to my iphone.
I can't believe this isn't supported in iTunes. Am I missing something obvious or is there no way of adding photos from the computer to iphoto and then having them be able to transfer to my iphone?
iMac 27" Quadcore i7, MacBook Pro Core 2 Dual, iMac 27" Quad Core i7, Mac OS X (10.6.4)