Use the PowerCenter task to run a PowerCenter session in Data Integration.
To run a PowerCenter session in Data Integration, you create a workflow for the session in the PowerCenter Workflow Manager. You create a PowerCenter task in Data Integration. When you configure the task, you upload the PowerCenter XML file that contains the workflow.
If you want to make any changes to a session that is used in a PowerCenter task, you need to make the changes in PowerCenter. You can export the revised PowerCenter XML file and then edit the PowerCenter task to upload the updated XML file.