If you have many items as BOM components, if you edit the Where Used page as Edit in Excel, the file will miss Type and No. columns. The fields are added to that page as you can use Page inspector however seem to be non-editable. You will have to create an Extension to show those fields on the card page and then in the Edit in Excel function. The fields are quite mandatory for full user automation and will be nice to be added by default on the page.