Hi Kimbers,
If you are using Pay Pal, then you can go to your account and 'REQUEST MONEY'. Click on "Invoicing Tool" and that is your ticket to getting your buyers their multiple-item invoices. Unfortunately, it does take more time, but at least they will have their invoices. You will have to get your Item #'s, Item Titles, Quantities, Prices and S&H (discounts, if any) prior to generating the invoices.
It WILL work ~