I originally made an app for WP7 then a while later decided to do a complete overhaul of UI and code which is when WP8 came out so I took down the old app and made a new one specifically targeting the newest platform, however I now want to 'port' it back down to target the old audience as well.
I've had a few attempts but it seems to be a tedious task, is there any easy way to do this?
Thanks.