How do I handle the Fitbit-to-Google migration?

For the Fitbit-to-Google account migration, keep using the Fitbit connection for both new and existing users.

For the Fitbit-to-Google account migration, keep using the Fitbit connection for both new and existing users. The integration path is unchanged.

• New users authenticate through the same Fitbit OAuth flow.

• Existing users keep flowing until their account is migrated. At that point their token is invalidated and they must reauthenticate through the Fitbit flow. If their user_id changes, a user_reauth event with old_user and new_user is emitted so you can reconcile records.

Users should complete the in-app 'Move now' step before the Fitbit deletion deadline to preserve their account and history.