Hi Dayton Place the updated rules into a new minor version of the ruleset and include the newruleset version In a new version of theapplication and you can grant access to Test User for that application version and normal user access group can access older version of the application.
To anyone reading this, we were able to resolve the issue internally. The issue was that in the xml file being parsed there was actually a & without amp; after it. This caused the parse error. The solution was that when the xml was generated it needed to add the amp; after the &. It took us a little while to find this because with certain xml tags we were properly adding the amp; but not other fields. Thanks!