the xml istself, I don't see any way to load it. But if you have an xml file, you have a project. Open this projetc in the messaging editor, and right click on the message or the category, last contextual menu is "Move to", then select the Common Repository as the target project.

Cool I can do that. Thank you and all for the great help. This entire segment has been a "Perfect Storm of Learning" for me. Your all great.