Proxy data is incorrect in Check out modal

The data of the sponsor for whom the proxy is checking out does not appear correctly in the checkout user pane.
Steps to reproduce:
1. Go to the Check out app
2. Enter the number of user who is also a proxy for someone else
3. View the patron details that appear

Expected result: the info of the patron who was entered moves down, and the sponsor's info fills in above.

Actual result: the patron type of the sponsor is showing as the proxy's, not the sponsors. The number of open loans in the Proxy's as well. See attached