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When I selected a new photo album to sync it warned that the iPhone photos would be overwritten. Then it warned about phone being synced with another account. Asked if I wanted to merge or replace info. Selected 'merge information'.
Result: Did not work properly (bug?). Ended up with 2 photo albums on device, one titled Photo Library, one titled with album title. Both albums contained the same photos from iPhoto. Previous iPhoto album from laptop sync was overwritten.
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