When using X source, customer invoices could potentially be very long because individual SKUs are separate line items. However, a new view was added so that styles that have multiple lines with similar info could be combined to make a shorter and more readable invoice.
To see the Consolidated View is very simple. After you have added your X Source Lines, simply select the Consolidated View to consolidate items that have the same style, color, price, and shipping address. If you do not have applicable line items, you will see a blank area.