Page History
...
The duplicated field will reflect the current state of the original field. For instance, if a Substring transformation has been applied to a field and then it is duplicated, the duplicate will have the substring as well. However, if it is deleted from the original field, it will be removed from the duplicated field as well.
Fields that can be duplicated should be of the following data type: Text, Numeric, Date/Timestamp.
Instructions
This transformation is done directly on column fields once a step has been configured, and data is generated in the Data Transformation module. Follow these steps to create a duplicate field:
...