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Hello: Yesterday I bought "PILLARS OF ETERNITY: CHAMPION EDITION" on GOG.com. When I play it moment that I'm very like it. I want get more goodies about PILLARS OF ETERNITY. So I want to buy PILLARS OF ETERNITY: ROYAL EDITION, but I have PILLARS OF ETERNITY: CHAMPION EDITION...... Have anyone knows which purchasing methods let CHAMPION EDITION UPGRADE to ROYAL EDITION on GOG.com? Thank you very much.