Once you've created a discussion in your course, you can edit the discussion details. You can update the discussion title and content, and you can modify the discussion options.
In Course Navigation, click the Discussions link.
Click the name of the discussion.
Click the Edit button.
Edit Topic in Discussions Redesign
To edit a discussion in Discussions Redesign, click the Options icon [1] and click the Edit option [2].
Edit the text in the Rich Content Editor. You can also edit other options within the discussion.
Click the Save button.
Note: If you are editing an unpublished discussion and want to publish it, click the Save & Publish button.