Previously synced photos got deleted, how do I recover them?
I had about 6g worth of photos synced to my iPhone, which were unable to be deleted on the device itself. I was trying to import them to my computer, so I selected sync photos from iTunes, and in doing so, all of the previously synced photos disappeared. The strange part is, my unsynced photos, just the pictures I've taken within the last few months on the camera roll, didn't get deleted in the process, yet the synced photos did? I tried to do the backup restore, it took about 15 minutes so I assumed the photos were being restored, however it didn't work. I see a lot of people trying to completely delete synced photos, but I'm trying to do the opposite. Any ideas what happened?
iPhone 4S, iOS 8.3, null