The FMA had sought costs against the Du Val founders following a judgment in July.
About 42,000 customers affected and overcharged between 2014 and 2022.
Rockfort Markets mum on exact nature of litigation, although one claim exceeds $1m.
The failed company has until November 1 to pay some of the missing US$100m.
Financial details remain suppressed by court order.
Hong Kong entity linked to Cryptopia Rescue member Victor Cattermole has written to liquidators.
Hong Kong-based director wants a month to 'allow a resolution of matters' in cross-border money-go-round.
Kiwi businessman Andrew Griffiths is fighting to overturn the order to liquidate the company.
Receivers of company that owned luxury Six Senses Resort in Fiji appointed liquidators to Andrew Griffiths’ company in February.
The Court last year found George Kerr liable under personal guarantees for amounts owing to BNZ by his companies.