The "Emperor's Shadows" emblem has disappeared from my collections but I do still have it on my hunter but I can't equip it as it says "Requires Emblem Not Owned"
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You will have to be on the platform you had the digital deluxe edition, or redeemed the code on from the physical editions on to be able to use the emblem [quote]EMBLEM OWNERSHIP UPDATE Starting with the launch of Season of the Deep, emblem ownership values were updated. For security purposes, players who have emblems on their account that do not appear in their Collections (Collections-Flair-Emblems-General) will no longer be able to equip these emblems, and players will no longer be able to see these emblems if they are still equipped. Those who are affected by this change will need to reacquire these emblems through proper means by unlocking them in their Bungie.net profiles or on their platform if they wish to continue using them. Players who have emblems unlocked on their Bungie.net accounts and platforms are unaffected by this change.[/quote] https://www.bungie.net/7/en/News/article/twab-may-25-2023