Show Invoice Line Items for Fields in Hour/Rate on Invoices, not Just Totals

The line items on space costs for invoices show the hours then the rate and seems to calculate the total, whereas the field line items show 0 for hours and then just show the rate as the total, and then the total for the line item. Can we have the invoices also show the calculations like it does for the space cost rather than showing 0 for the hour?