I'm seeing that changes made on an Account after we have enabled State & Country/Territory Picklists on our sandbox default to showing the shortcodes for Country & State. Isn't it possible to show the full values instead of these shortcodes in the Account history? Preferable would be 'Changed Billing Country from Netherlands to United States of America.
Here´s what being shown in the Account History list:
And here is the configuration value for Netherlands in the State & Country picklists. Notice the 'Country/Territory Code'. Why is that being picked up in the history report? If no one has encounteered this before it may be a bug. I haven't enabled this on the production environment yet, so it may be something related to the sandbox and not the implementation per se.