# WHERE DEVELOP -> MIGRATING AN EXISING APP -> IDENTIFY DISTRIBUTION COLUMN # WHAT We typically advise tracking this with a spreadsheet, and have created a [template](https://docs.google.com/spreadsheets/d/1jYlc22lHdP91pTrb6s35QfrN9nTE1BkVJnCSZeQ7ZmI/edit) you can use. # WHY Sorry, the file that you've requested has been deleted.