First of all, go to your concerned Document from the "Quotation" tab of your Project.
Then open the tool window of your editor. Then select File > Version History.
💡You can also do CMD + Option + Shift + H.
After clicking on Version History, you get a window with all your latest changes.
Simply select the correct version and press Restore this version.
💡A duplicate project has no older versions. You will have to restore to the original project.
🚨 Be careful, restoring your old version will not take into account the latest product/budget/program information if you do not re-generate your Quotation afterwards.
🛎️ For more support, our team is reachable via the chat on the bottom right.