Add a new column to the existing data set and refresh

ewuchatka It is most likely because you are inserting it into the middle... You can do one of two things.

Easier - put it at the end of the Excel doc, and refresh

Harder - keep it where it is. Go to Edit Queries -> highlight the query you are working with -> Advanced Editor and you will see the M code that is pulling the data. look at how the other columns are being added, and insert your new column in between the columns that are being pulled. Refresh in query editor, close & apply. And you should be good to go.