I have a flow that compares data from an Excel file to a SharePoint list and writes the delta/changes to a separate Excel table. Everything seems to be working as designed, flow executes successfully except Power Automate doesn't upload the last column of data, "ECAS Actual Start Date", into the table. It's almost as if the column doesn't exist in the flow run history. I am baffled and can't figure out why it looks fine in the designer but is seemingly absent from the run history.
I've tried deleting and readding the Add a row to a table action; I've also tried creating a new, different table in the Excel file but no joy. I confirmed the range of the table includes this column.
Edited to add: If I add random data to the column (ex: "Name") instead of the date, it seems to work.


