IC WebClient - Added Field Not Found in DO_HANDLE_DATA

I tried adding an input field to the BuPaSelectCustomer view and also to a custom view added to the IdentifyCustomer viewset just below the BuPaSelectCustomer view. In both cases, the field populates and displays correctly when the views are rendered. However, the name of the field is not available in the DO_HANDLE_DATA method (after clicking a button), nor is it available in the topmost controller field list where DISPATCH_INPUT is called. In both views, there is a corresponding page attribute with the same name. What could be wrong?

Thanks,

Brad