When you view the data grid for Inspection Data Views and Inventory Data Views you will see an Export to CSV button and a checkbox with the label Show Blank Columns.  If the Show Blank Columns checkbox is selected when you click on the Export to CSV button, then columns that do not contain any data will be included in the CSV file that is generated.  If the checkbox is unselected, then columns that do not contain data will not be included in the CSV file.