No Photo Location Updates?

I was wondering if when you post a photo, if you have to check-in separately/before to get the photo to show your new location. From you email guide it seems like it should be possible by adding in the address in the body with the attached photo, but when I do that it doesn't update my location. It just says the photo was taken in the previous location i checked in at. I am using the iPhones email client if that makes a difference. It's kind of a pain to have to check in to the new location and then send a photo separate so it shows up in that new location. Hope that made sense. Thanks,
Jason