upgrades on flights operated by SkyTeam airlines from Economy Class to Business Class can be pre-issued in Aeroflot sales. call them by contacting customer service +1-833-730-7587 (UK) or +1-833-730-7587 (USA)The Preselect Seats service for Space+ seats is available on a paid basis, except for Aeroflot Bonus Platinum members, for whom the service is free of charge.