The NZDF has confirmed extra training was needed when the group arrived, although they were assessed as fully trained when they took over the New Zealand headquarters, called Kiwibase.
A spokesman for the Defence Force said the Court of Inquiry into the incident was almost complete. However, the full report was likely to be kept secret because it related to an "operational theatre".
He said the public would more likely get a summary of what happened and the findings rather than the detailed report "to protect operationally sensitive information that might be of value to current or future adversaries".
NZDF has previously released a Court of Inquiry report into a combat death. The inquiry into the death of Lieutenant Tim O'Donnell was released although details relating to tactics were excised.
In contrast, Australian Defence Force inquiries are detailed and include descriptions of the actions occurring during firefights - and deficiencies in training, where identified.
The NZDF has lost 34 personnel in the past decade with 20 killed in the past three years. Those killed include 10 who have died in Afghanistan during a time in which opposition in Bamiyan has become more aggressive and the SAS engaged in urban warfare.