I need help to review updatePaymentApplicationDefBd service...

[Jacopo Cappellato]

To the authors, or other developers comfortable with the logic 
implemented in the service:

InvoiceServices.updatePaymentApplicationDefBd(...)
could you please help to review the patch committed in

https://issues.apache.org/jira/browse/OFBIZ-1144

?

Or help me to understand the logic implemented in the service?

I really cannot understand much of the stuff in it and so it is 
difficult for me to review the important fix in OFBIZ-1144.

Thanks,

Jacopo