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.