In 2020, the Courts revised High Court Rule 9.7(4), so signed versions of evidence are no longer required in a casebook. Specifically, HCR 9.7(4)(a), which mandated signed briefs of evidence, was revoked during the Covid lockdowns by the High Court (COVID-19 Preparedness) Amendment Rules 2020.
The old version of HCR 9.7(4) can be found here: https://www.legislation.govt.nz/regulation/public/2016/0225/59.0/DLM6951847.html
The updated version of HCR 9.7(4) can be found here: https://www.legislation.govt.nz/regulation/public/2016/0225/latest/DLM6951847.html
For consistency, the signature requirement in High Court Rule 9.12 was also removed:
The old version of HCR 9.12 stated:
The updated version of HCR 9.12 states:
For more information, also see https://www.nzbar.org.nz/news/changes-high-court-rules-address-covid19.