E-Commerce-how to view who paid for a users enrollment?

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We have set up our ecommerce to allow someone else to pay for a conference. This works really well for the end user to indicate someone else is going to pay. The person at the organization with the corporate card receives and email and the org person logs into the LMS and pays for that person. It works slick BUT, how do we see who paid for who. Reports just show the customer who paid. Due to some problems in getting our eCommerce set up correctly in the beginning. We need a report that will provide a cross walk from