SmithRegPro v.4.48 (full version)
DNN v6.1.5
SQL 2008R2
Shared Hosting - PowerDNN

There seems to be a bug in the Express Registration code that causes the Zip Code textbox to be cleared when you click the 'Use Customer Info' checkbox to transfer Customer Info to the #2 'Thanks for Paying' section of the 1st page.  

This can be verified by going to my site (www.geekygirlsafterdark.com).  Select the 'Membership' page, then select any of the 4 available membership packages.  On the express registration screen, fill in all of the data in section #1 'The Basics' and then scroll down to section #2 'Thanks for Paying'.  Upon clicking the 'Use Customer Info' checkbox, the screen refreshes and the Postal Code textbox is cleared (it is actually empty on both sections after refresh).  Failing to re-enter this information causes a validation error and forces the user to go back and re-enter then info.

This is causing confusion with potential subscribers and hindering my ability to smoothly onboard new members.
Any help or suggestions appreciated.

-Mike