I have an older iPhone 6 and a new iPhone 7. I use the iPhone 6 as the primary phone attached to the RC. I foresee a future where I would like to switch between the 6 and the 7 as the attached phone to the RC. Both have the DJI GO app installed and I'm logged in on both apps, but I can't seem to get the settings to synchronize between the two app installations. Is synchronization possible or does it need to be configured in each app individually?