You would need to register again to the new app. However, if you have a mobile number in your current account, it will be migrated but you will only be pre-registered. Meaning, once you input your mobile number in the registration screen of the new app, your basic information will be pre-filled but you would still need to complete the registration.
Should you prefer to use a different mobile number, the new app won’t be able to recognize you so it won’t be able to pre-fill your information. Anyway, only name, email address, preferred contact method & preferred dealer are required to complete your registration.