A David Ross investor and the liquidators of the Wellington fraudster's Ponzi scheme are both trying to take a clawback test case to the Supreme Court.

Ross Asset Management's liquidators have filed for leave to appeal to the country's highest court and Wellington lawyer Hamish McIntosh is understood to have done the same.

McIntosh's appeal will likely attempt to fight an order that he repay $454,000 of "fictitious profits" he received from Ross Asset Management.

The liquidators' appeal will try also get back the $500,000 of capital that McIntosh put into RAM but got out before it collapsed along with that profit.

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The case will impact how the liquidators, John Fisk and David Bridgman from PwC, deal with other investors. If their appeal is accepted and they win in the Supreme Court, they will target 382 other RAM investors who got paid out $78.4 million from the business.

If the situation remains as it is today, they will only try to recover $40.9 million of "fictitious profits" from 241 investors in the fraudulent business.

Described last year by a judge as an "innocent investor", McIntosh borrowed $500,000 from Westpac to put into the fraudster's business in 2007. His investment had purportedly grown to $954,000 when he closed his portfolio four and a half years later and the liquidators of RAM's since-collapsed business went to the High Court at Wellington last March to recover the funds.

While the High Court ruled McIntosh had a defence to the claim for the $500,000 original investment, the Wellingtonian was last year ordered to pay back the $454,000 of "fictitious profits".

McIntosh appealed those orders, while the liquidators, Fisk and David Bridgman from PwC, challenged the point over the $500,000.

In a majority judgment released last month, Justices Christine French and Rhys Harrison dismissed both appeals.

Justice Forrest Miller, in a dissenting judgment, dismissed McIntosh's appeal but said he would have allowed the liquidators' appeal - effectively meaning the Wellington lawyer would have needed to pay back the full $954,000.

Ross Asset Management collapsed in November 2012 leaving some of 1200 clients $115 million out-of-pocket. It was later revealed that director David Ross was running a Ponzi scheme.

He was convicted of fraud and jailed for 10 years and 10 months.