Magento Table Rates Shipping Method Ignores Discounts

Magento 1.x

Problem:
Magento's table rate shipping method uses order total to calculate shipping rate and NOT the discounted order total (e.g. ignores coupon code discounts).

Solution:
Detailed discussion here:
http://www.devproblems.com/table-rates-shipping-based-on-price-after-discount-magento/