Deleting versioned propositions
Delete propositions in a group saved as decision data rules to remove obsolete or invalid product offers.
In the header of Dev Studio, click.
In the Decision data records list, click the group that contains the proposition that you want to delete.
Select the proposition or propositions that you want to delete and click Delete.
The propositions that you delete are removed from the Data tab of the group (decision data record) you clicked.