I contacted ALL customer support via a contact form and attached 2 pieces of proof of status at Marriott. It was rejected. Reply: "Dear [customer], Thank you for contacting ALL - Accor Live Limitless Customer Care. ALL – Accor Live Limitless does not participate in status matching, however we invite you to visit all.accor.com for status information. There, you will find the benefits at each status level and how to maximize your stays to achieve the highest status possible for your future stays. Please reply to this email should you require further assistance with this request. Kind regards, [name] ALL - Accor Live Limitless Customer Service"