KB : How to unlink issue/workitem pair if using history to store the Jira issue key

If a user has stored the Jira Issue key as history in the TFS workitem, there's one way to clear the linkage between this workitem and the Jira issue.

By adding this comment at the TFS workitem, the Synchronizer will clear the linkage between this workitem and the Jira issue at the history before

##TFS4JIRA_NONE