You can remove tags from items in a case.
From the navigation pane, go to Data Insights.
The Data Insights page appears.
Click Case manager.
The Case manager page appears.
Click the case.
The case page appears.
On the Search tab, select the items that you want to remove tags from, and then click Manage tags.
The Manage tags dialog box appears.
Select Remove all or remove tags from a specific item from the preview pane.