8653ba7d_Issues___Wilmington_University__Issue
[Area] Discussion Board - grade columns [Resolution/ Workaround] When deleting DBs, be sure to also select that the columns are removed from the Grade Center; otherwise, they will remain and cannot be removed on our end. Recommend advising faculty to edit discussions rather than delete them and create/import new ones. [Issue] 
DB columns remaining in the Grade Center
Blackboard 9 Known Issues - Wilmington University
Issue