Power BI not picking up new columns from your CSV file after refresh? Here’s why — and how to fix it. Most folks think a one-click refresh should just work. But with CSV files, Power BI doesn’t automatically detect new columns. It grabs only the columns it was told to fetch — literally hardcoded in the source step. 🧠 Here’s the fix (and how to future-proof it): Let’s say your CSV originally had 4 columns. You later added a 5th one and overwrote the file. You hit refresh… but nothing changes in