Data Flow: Get Data Sources

[Thomas_]

I'm trying to get the data sources for a Data Flow using the GetDataflowDatasourcesAsAdmin API, but when I call it I get two entries for each data source. The connection details are identical, but they have different data source id and gateway id. How can I know which one is the "real" one? 

And also, if I add a new entity (with a new data source) to a data flow, but cancel before I have saved the changes, I still get two entries for that data source, even if it is not used by the data flow. Why?

Thanks for any input!