How to recover Trello data if content is deleted

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Like many other Cloud Providers, Atlassian uses a shared responsibility model for data management and recovery. 

Atlassian runs a comprehensive backup program for Trello, however, these backups are not available to revert user-initiated destructive changes, such as custom fields overwritten using automation or deleted attachments, stickers, cards, lists, board, or workspaces.

Instead, these backups are used as part of Atlassian's Business Continuity and Disaster Recovery plans for Trello. You can read more about these plans and our practices around Business Continuity and Disaster Recovery on our Trust pages: see How Atlassian Manages Customer Data.

Recovering from user-caused data loss for Trello is self-service, meaning Atlassian Support cannot provide assistance recovering user generated content that was deleted by a user.

When it comes to your Trello data, and recovering from user-caused data loss, we provide you with the following free mitigation and recovery tools:

1. Archiving cards and lists - Before you delete data (cards / lists), we provide you with the option to archive. You can recover archived cards and lists at any time from the board menu. When you recover a card or list from the archive: card title, description, attachments, stickers, labels, custom fields, dates, checklist items, members, and automation rules are recovered.
2. Closing boards - When you close a board it is not deleted. You can delete or recover closed boards from your boards page. When you reopen a board - background image, lists, and cards with: title, description, attachments, stickers, labels, custom fields, dates, checklist items, members, powerups, and automation rules enabled on the board are recovered.
3. Workspace deletion - When you delete a workspace, the boards within that workspace are closed and not deleted, which means they can be recovered (see above for "closing boards"). Workspace title, description and settings are not recovered and will need to be manually recreated.
4. Board export - You can export a board to either a CSV or JSON file. 
5. Automation - Create a scheduled Trello automation report to capture copies of card data you can't lose.

In addition, you may be able to use free powerups like: BackupLABS Trello Backup, Backups for Trello, Pro Backup for Trello and/or Import to Trello by Bluce Cat (CSV, Excel), and Smart Import from Excel, CSV (with native board export functionality) to recover Trello data if data does get deleted. Note: The powerups listed above are created and supported by 3rd party providers; by installing them you will need to agree  to their Terms of Service and Privacy Policies. For more information on installing apps that are owned and operated by third parties, please see the "Third Party Apps" section of Atlassian's Privacy Policy.

We recommend upgrading to a Trello Enterprise plan to get additional admin controls to prevent user-caused data loss. These admin controls include:

• Workspace board deletion restrictions
• Enterprise wide permissions

Learn more about Trello Enterprise here.

[Dreamsuite Mike]

Completely unaffiliated but if you really want to protect your data, the only Trello solution is one every business using Trello should have...Rewind - Backups for Trello 

[BackupLABS]

Thank you for the mention. We are working hard on improving our Trello Backup offering, with new features added frequently.