Drupal: Create a Draft for an Already Published Page
In your University Drupal site, you may have content that is published, but you would like to be able to update it without removing the published version. An example: There’s a current course that has a page on your site with the course description for the current semester. The professor wishes to change the course description for next semester. You wouldn’t want to create new content, since it’s the same course. So you can create a draft version for an already published page.
Scroll to the bottom and click the Publishing Options tab
Change the action to DRAFT
Ensure that Create New Revision is checked
There will be a new tab -- View Draft -- on the content. The View tab will show you the currently published version of the content The View Draft tab will show you the current draft version of the content The Edit Draft tab will allow you to edit the draft version
The Revisions tab will show you the versions. Note that the Currently Published version is highlighted in Green.
When you are done editing the new version of the content, and you want the new content published, set the action on the Publishing Options tab to Published.