Does anybody know where the "Request / Response" xml files would be stored for the UPS extension please (Magento 1.9.2.4)? I'm having a really wierd time trying to get help from UPS on this, and they insist that I have to submit these files before they can help. The extension is configured correctly to look up rates from my negotiated account with UPS, but customers are being offered different (lower) rates than UPS are actually charging me!
app/code/core/Mage/Usa/Model/Shipping/Carrier/Ups.php
@NeilColeclough : Would it be possible for you to let us know of the problem so that we can answer it here. So that customers coming in would be able to understand the problem and the solution for it?