Selected 'wallpaper' appears in Camera Roll
I have selected a particular image as my 'wallpaper' from the ones provided in my iPhone 3G. After syncing with my computer, that image appears in Camera Roll on my 'phone. How? Why?
Shoukd it be doing that? It means that there is a danger that if I sync photos, the wallpaper image will be synced to iPhoto, and the next time back to the iPhone. Before I realized what was happening, I ended up with 5 copies of the wallpaper image in the Albums on the 'phone.
I should be grateful to be told (a) why this is happening, and (b) how to stop it (other than by deleting the image from the 'phone before each sync operation).
Mac mini, OS X Mountain Lion (10.8.5)