[b]I've rewritten the original post to better summarize the current standing of the issue and include more detailed information. The old original post has been moved to a reply to the main post and marked accordingly the as original.[/b]
There has been a long running issue that Bungie has acknowledged in the above tweet over a month and a half ago. The issue is that we have not heard anything about the issue since then, and it's still a common occurrence with no solution.
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[b]THE MAIN ISSUE:[/b] Storing items in the tower vault may get them deleted at random. This applies to any items in the vault.
[b]POSSIBLE RELATED ISSUE:[/b] Items being carried by player characters going missing at random. This also applies to any items held by the player in their inventory.
[b]POSSIBLE RELATED ISSUE:[/b] Player characters being entirely deleted when logging out and back in. There may also be a few other ways that this can occur. The end result is entire characters being removed from the player account. This includes the entire character inventory as well when this happens.
[b]SOLUTION:[/b] ???
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The most we have heard about the problem is that Bungie is aware of it and working to improve character data tracking. No solution has been found and [u]the problem has not been fixed[/u].
My attempt over the last month and a half at this point. Has been to try to get any information regarding the issue as possible. However getting a response from any of the support staff has been nearly impossible. In my entire month and a half of sending messages to support both on these forums and through Twitter, I have received a total of ONE actual response with very vague information.
[quote]"Thank you for being passionate about this issue. Although we are actively investigating, currently, we have no additional information to share regarding character data loss. Once we have 100% info we will definitely update our players." - BNGHelp0[/quote]
This response does not contain any new information and if you actively search for occurrences of this issue. You will find that they have been being reported since early November. You can still find at least one daily occurrence of this issue searching these forums or Reddit/r/DestinyTheGame as well as a few other forums.
These are just SOME of the older reported cases. Maybe the support team can read through these and gather some information to determine a solution.
http://www.reddit.com/r/DestinyTheGame/comments/2l18cb/i_just_lost_every_item_in_my_vault/
http://www.reddit.com/r/DestinyTheGame/comments/2k3kmh/anyone_else_had_weapons_disappear_from_their_vault/
http://www.reddit.com/r/DestinyTheGame/comments/2lefqp/lost_everything_in_vault/
http://www.reddit.com/r/DestinyTheGame/comments/2jzeox/missing_vault_items/
http://www.reddit.com/r/DestinyTheGame/comments/2kbd5i/did_bungie_delete_your_guns_or_gear_are_you/
http://www.reddit.com/r/DestinyTheGame/comments/2l00o4/all_items_stored_in_my_vault_disappeared/
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Still nothing on this? My Xur-upgraded exotic (Apotheosis Veil) was randomly demoted back to it's un-upgraded state. I know there are worse things that can happen, but it's making it very difficult to get to 31.