Delete a Subset Definition
When you no longer need a subset definition,
you can delete it from the list of subset definitions.
Procedure
Right-click the subset and click Delete.
If the subset was used in the report, IBM®
Cognos®
PowerPlay® prompts you to choose
whether to delete the categories from the report or leave the categories
in the report while breaking the association with the subset. If you
chose to leave the categories in the report, the next time the data
is refreshed, the categories added using the subset are not updated.