You can transfer existing shares of SFIO to Fidelity, but that won't make them eligible for trading. They'll just sit in your Fidelity account until such time as the DTCC clears them. Since the DTCC has SFIO shares suspended, hurry up and wait..
So I guess we all need to transfer our shares to fidelity, otherwise we sit and watch from the stands if there's a run so we can sell some during the supposed run that's coming during the lock if there is to be one. It all depends on when and if the lock is lifted IMO.