"The panel considered that, if all details were suppressed, the impartiality and integrity of the judicial system may be brought into question."
The other person involved in the alleged misconduct has permanent name suppression.
Herdson denies the allegations, but resigned from her position in August 2021 - less than a month after the Attorney-General assigned a judicial conduct panel.
During discussion in the Wellington District Court in April, Herdson's lawyers argued the jurisdiction of the panel was clear; the fact their client no longer sat in office as a member of the judiciary deemed the process moot.
Paul Wicks QC argued if the judge was no longer a judge, there was no need to remove them.
However special counsel Dale La Hood argued for the continuation of the process, and said the fact the complaint had reached the stage it has, gave base to the argument that the alleged conduct of Herdson should be scrutinised.
The process, La Hood said, was to maintain standards and public protection as well as maintain the integrity of the judicial system.
In a decision released last month, the panel concluded it did not have jurisdiction and there was no purpose for them to investigate now Herdson was no longer a judge.