On 2012, August 3, the ITU updated its Table of International Call Sign Series to reflect a call sign change for Niue Island. The island will now have the entire E6 prefix block. Niue, an island approximately 1700 miles northeast of New Zealand, is a self-governing island nation that has been in free association with New Zealand since 1974.
Prior to the change, the island used ZK2. Niue, which is about 1.5 times the size of Washington, DC, has a population of almost 600 people.
CQRLOG country files must reflect the latest ITU changes and additions. Perform DXCC stats update, all your ZK2 contact will be listed as E6, also if you never worked any E6 :-) ZK2 disappeared from the country files because is now assigned to New Zealand. Don't be surprised!
If you have not the autoupdate feature in CQRLOG in the ON state you must download the country files and update manually! Download here