Overview
Previously, every country code needed to be specified explicitly using the Country Reference setup:
Since all carriers use a standard 2-3 character country code mapping, this was an unnecessary burden to end users.
New Handling
All possible countries are now defaulted in with 2-3 character country codes. Instead of specifying a country code directly, a non-standard Country is added against a Mapped Country, which is then used by carriers to grab a 2 or 3 character country code.
In addition to the cleaned up mapping, every country code (2 or 3 characters) and every spelled out country will automatically map to the appropriate country code from a shipping address.