Since I save Web pages as Web archives so I have an offline copy of exactly the status a page had when I retrieved it, it´s good that I can lock this document to prevent further changes.
But when I do change things, lock the document afterwards and click on the refresh icon, the web archive gets updates by the original and my changes are gone. I think this is not good. When the document is locked, I dont´want the archive to update when I click on refresh accidentally.