"Such vehicles are often established for the express purpose of placing assets beyond the reach of creditors, and can be vulnerable to successful challenges on the basis that the intention of the establishment was to defeat creditors," the judgment said.
The bench of judges decided it would be too early to strike out the Financial Markets Authority's pleading at this stage, and that it would be more appropriate for it to proceed to discovery and a substantive hearing.
The trustees also sought to strike out an FMA claim that there was an arguable case the KA4 trust was a "sham", saying the regulator hadn't supported its argument with enough detail.
The judges accepted the FMA's pleading was "simplistic and needs amplification and refinement" and needs amending, but didn't need to be struck out at this stage.
The FMA was awarded costs.