@JonpriL

RE: You don't have to change any settings in your report nor in QuickBooks Online. Instead, you might want to update your MS Office, including your Excel.

Excel cannot change what QB Online creates.  Since it creates the Excel file on the server, nothing on the local machine can impact what it does.

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The correct answer is that if QB Online does not send formulas to Excel for the report you're running, there isn't a way to change what it does.