Add additional mapping in deployed iflow

Hi all,

I am fairly new to CPI. I am trying modify a deployed iflow and map an additional field from the ERP IDOC. If I click on "Monitor" I can find my deployed iflow. However, I don't see an option to edit from there.

If I go to "Design", I can find the artifact but when I look at the mapping, it is not the mapping I currently have deployed and is visible (not editable) in "Monitor. Do I need to download the WSDL and upload somewhere then make my changes?

Thanks in advance!

Don