Axis2 Client receiving element, but value object is null

All,
A quick description of my problem. I'm using axis2 1.6.2 and am
generating the stubs using xmlbeans binding.
I'm calling a web service that has a response consisting of different
namespace elements.
I've installed a log handler, and see the full message coming back, with
sub element Transaction.
When I call response.getTransaction() the value is null.

I see no errors or other indication in the log why this might be.

Is there any logging I can configure to try to determine what's going on?
Any suggestions would be greatly appreciated.

thanks,
Adam D.