Thanks for posting in the Lucidchart Community! Any documents you create in Lucidchart will remain in your account indefinitely unless deleted. Even if your subscription is cancelled, documents will remain in your account as view-only documents. To regain edit access, you'll just need to upgrade your subscription. Alternatively, Lucidchart allows you to import and export diagrams in MS Visio (.vdx), Gliffy (.gxml, .gliffy), and Omnigraffle (.graffle, .graffle.zip) format. You can export a file in one of these formats for later import. I hope this helps! Let me know if you have any questions.