Hi there. You must be able to authenticate all linked accounts to manage Cross Save or unlink them from your profile. If you can't do so, you'll want to reach out to the platform support to see if you can gain access to that account. For security reasons, Bungie cannot remove them for you. [quote]Players who can't authenticate connected platform accounts will have to contact their platform's support to try and gain access to the account. If that isn't successful, players may want to unlink their connected accounts they have access to and link them to another Bungie profile. Bungie is not able to remove connected platform accounts from profiles.[/quote] https://help.bungie.net/hc/en-us/articles/360049498031-Contact-Form-Cross-Save-Issues You can attempt to ask Bungie for assistance in deactivating Cross Save by filling out the contact form at the bottom of the article I linked above, but please note that there is no guarantee they will be able to help in this situation, and if they are able to disable Cross Save, they absolutely cannot remove the account from your profile—you would have to move the accounts you can access to a new Bungie profile. Doing so will result in losing any emblems you've redeemed on this one.

Hello. You can’t have one account removed from cross save. You need to deactivate cross save to remove all accounts associated to it. Do you wish to have cross save deactivated?