When reorganizing a project, you may need to delete a discussion. Do this only when there is no alternative.
Note: You must have Discussion - Delete permission on this project to delete a discussion.
To delete a discussion, follow these steps:
Note: To restore a deleted discussion, or to delete it permanently, click Deleted discussions in the left navigation pane. Click Permanently Delete Selected to delete it permanently. Click Restore Selected on the same page to reinstate the discussion in its original position in the Discussions page of the project.