I've started using the updated LoginWithGooglePlayGamesServices request to authenticate Google Play players. However I have existing players that created accounts with the previous LoginWithGoogleAccount method and the two methods don't connect the players to the same Playfab accounts. Those could result in lost purchases etc. as they'll create new accounts instead of logging in with their existing accounts.
Is there a way to mass migrate/update the existing Google Play accounts to the new Google Play Games Services accounts?