Yes I have confirmed that the confirm page (on my webserver) is using the new ShipWeight calculation (and I did confirm that that calculation is using that syntax with the captalizations of the S and the W).
This is what the confirm.php has for UPS shipping.
$Shipping_PackageArray[$Shipping_PackageIndex]["PackageWeight"] = "".WA_eCart_FormatNumber($WA_Store_Cart->TotalColumn('ShipWeight'), true, 1) ."";
When I first made this change, I didn't realize there was 3 instances of this. One for UPS which is the shipping method I am using, one for Fedex and one for USPS. I did NOT change Fedex and USPS but that shouldn't matter since I'm not using those shipping methods, correct?
Here is my confirm page that I retrieved from my webserver so you know it's the one I've been testing online.