HI ​@Rok Kozel, thanks for reaching out! Sorry to hear this happened. 

I’d like to get a bit more detail so we can point you to the right fix:

• Which diagram feature did you use when this happened? (e.g., Smart Diagramming, AI diagram, etc.)

• Did the board content get deleted, replaced, or rearranged?

• Are you seeing this issue on all devices or just one?

• Is the board on a Free, Team, Business, or Enterprise plan?

Once we know more, we can check if restoring via Board Version History is possible or if this needs to be escalated to Miro Support.

​Hi @Eca , it is this new feature “Diagram” which was suggested to me, to which I respond affirmatively, then everything on the board was changed. Wires were eliminated, text was removed, boxes deleted.. not everything, but like 40-50%.

Second thing is that I upgraded to the business package, but I am still not able to restore Board version and is still showing me to “Upgrade” 3 days after moving to the business package. 

Hi ​@Rok Kozel thanks for the additional information! 

I’m sorry to hear how much content was affected when enabling the new Diagram feature — that definitely doesn’t sound expected. Since this impacted board content, I’ve converted your case into a support ticket so the team can check what happened on the backend and help with recovery options.

Regarding the Business plan upgrade: normally version history should be available right after the upgrade. If you’re still seeing the prompt to “Upgrade,” that suggests something didn’t sync correctly with your subscription. The support team will also verify this for you in the same ticket.

You’ll hear from them directly by email with next steps.

The exact same happened to me yesterday. I have lost a lot of my work. The whole canvas look strange and the icon for Diagram shows but it is in the canvas mode. 
It´s really important work that now seams to be lost. It doesn´t help to choose an older version in the History panel.