Thanks for posting in the Lucidchart Community! I'm sorry you're experiencing trouble with your document. Can you please review the troubleshooting steps described in this Help Center article and see if this resolves your issue? If this does not work, please let me know and I will reach out to you via email for 1:1 troubleshooting. If anyone else is experiencing similar issues, please read the Help Center article and contact firstname.lastname@example.org with the following information if you continue to experience trouble:
- The document URL.
- The time (and time zone) you opened your document to begin editing.
- The time you finished editing and closed the document.
- Which edits were not saved.
- A detailed account of the time frame when you noticed your edits were not saved.