https://www.bungie.net/7/en/CrossSave [quote]Can I disable Cross Save once I’ve enabled it? Cross Save is intended to be a one-time action, but we realize there may be cases in which you want to visit the characters you left behind. Once Cross Save has been disabled, you will have access to your original characters on each platform. There is a 90-day wait to re-enable the feature. This policy exists to discourage activity like account recoveries by other players.[/quote] Based off the days left, your cross save was disabled 36 days ago. So you might think back to what you might have been doing in the game back in late April. There have been no verified cross save deactivations that weren't initiated by users. So, if you don't recall doing it then there is a chance someone either has access to one of your platform accounts and did it remotely, or you have someone in your household that has physical access as well as account credential access. In either case, as a precaution I would strongly recommend you change all your platform passwords and enabled two factor authentication.