I'm troubleshooting an issue on our production environment that is not occurring in our development or staging environments.  We've customized the Adxstudio registration profile form but the issue seems to be focused around the SubmitButton_Click event handler on Profile.aspx.cs 

When I step through the code using Remote Debugger, I'm assuming the line that executes ProfileFormView.UpdateItem(); updates the Contact record but it doesn't, thus an error occurs.  

I am not aware of any plugins or workflows that are failing but this issues doesn't occur on our non-production environments.

If the ProfileFormView.UpdateItem() doesn't update the Contact record, where can I look to catch this action?

Thank you,