Hello. I needed to merge two iphotos libraries. First i copied only the Master and the Preview files from A library to the other B library. When i execute the B library i couldnt see library As files and i tried to copy all files from A to B but when i do that because of the empty Master and Preview files i lost all of my pictures. Now the iphotos shows me only the preview pictures. I didn't delete any file. How can i recover my photos?