STR: 1) start editing a document 2) edit, edit, edit. Don't save yet. 3) attach a file: select the file, name it, upload it Now the edits you made in (2) are gone. You will see the little "You have a draft from: ..." ...banner at the top, and if you choose "Restore" it will bring them back. But it breaks your flow, is confusing, and if you don't see the banner and make more edits, you're then forced to choose whether to keep the old edits or the new ones. This is made worse by the fact that "You have a draft..." doesn't tell you which edits would be restored, if you chose to restore. It turns out that there is already a bug for this: bug 961188, but it seems to be dormant :(.