Using SQLite Debugger

In your rooted device, install https://play.google.com/store/apps/details?id=oliver.ehrenmueller.dbadmin&hl=es and open the DB of Google Authenticator. It’s easier than use ADB. The tokens will be in the “Accounts” table. Generate the new QR from the tokens (16 digits) in the URL http://goqr.me/#t=url and add it to your Authy app.