A “Do you want to save changes?” prompt appears when closing a spreadsheet with a query that either has already been saved or that has had no changes. Opening an existing query within an existing Excel file. If you re-open the Excel file and immediately try to close it without any modifications in BQ, you’re asked to save changes even if you took no action. How do I eliminate this unnecessary prompt?
Is the prompt a Microsoft Excel prompt (it’ll be in the title bar of the prompt)? Does it happen even if you don’t load BusinessQuery?
If so, there may be a formula in the Excel file that uses a changing function (such as @NOW). This would really truly change the file each time you open it. So the prompt would be valid.