Arrange the order of additional data sources
Introduction
Using the same names for columns in your primary and additional data sources creates a conflict on import, with the last import source having priority. This conflict means the most recently imported source overwrites data generated by previously imported sources.
Setting a specific order for importing each additional source mitigates this issue. Note that the primary source always imports first.
To set the order of import for additional sources:
Select the icon next to the additional source tag and position each source according to the most suitable import order.

A small notification window appears in the right bottom corner to confirm you saved the new order.
