hi @ESN
Thanks for pointing this out. For now you will have to use phpmyadmin or command line SQL to update the existing country codes
you can use the SQL tab to execute these queries in phpmyadmin.
Contacts
UPDATE contacts
SET contact_phone_country_code = 44,
contact_mobile_country_code = 44;
Locations
UPDATE locations
SET location_phone_country_code = 44,
location_fax_country_code = 44;
Vendors
UPDATE vendors
SET vendor_phone_country_code = 44;
Company
UPDATE companies
SET company_phone_country_code = 44;