Hi @FabianoFerrazza1 @FabianoFerrazza3
Indeed, Export Diagram Content exports a JSON that describes the diagram; then, this file can be used for data control, network calculation or analysis, or to feed external systems. You have no other way to export diagram content at the moment. Do you expect a tool to export diagram content into feature classes/shape files in a file geodatabase? Note that even if such a tool doesn't exist as a core tool with ArcGIS Pro, you can develop an ArcGIS Pro custom add-in command to do that using ArcGIS Pro .NET SDK API (see https://pro.arcgis.com/en/pro-app/latest/sdk/api-reference/#topic17701.html for the Network Diagram API).
Please let me know if you need some guidance to code such a command.
This being said, could you please tell us more about what motivate such an export command? Once your diagram exported to a file geodatabse, what do you expect to do with it exactly?
Thanks
Anne-Yvonne
Thanks