Re: [ANN] MangoCoinz Official ANN Thread - Mine cryptocurrencies on you smart phone
Hey you have to use a different username like an email address.. then send your coins from the old to the new address from what I remember. 
but when you send the old coins make sure test with a few first..
but when you send the old coins make sure test with a few first..Yes you need to sign up once again. And maybe even better store coins on the old app or send it to webwallet so you dont need to pay fee twice.