How do I edit a discussion in a course?
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.
Open Discussions

In Course Navigation, click the Discussions link.
Edit Topic

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 Discussion

To edit the discussion, use the Rich Content Editor. You can also edit other discussion options.
Save Discussion

Click the Save button.
Note: If you are editing an unpublished discussion and want to publish it, click the Save & Publish button.