Gai Waterhouse will appeal to racing's highest authority over her convictions in the long-running More Joyous affair.

The trainer lodged an appeal on Friday with the Racing Appeals Tribunal over the dismissal of two appeals heard last month.

The Racing NSW Appeal Panel dismissed her appeals for not reporting any condition that could affect the running of More Joyous in the lead-up to the All Aged Stakes and the Queen Of The Turf Stakes.

Waterhouse has withdrawn two appeals relating to the severity of fines totalling $7000.

The inquiry was sparked by a public tirade from More Joyous' owner John Singleton who sacked Waterhouse as his trainer on television after the mare finished second last in the All Aged Stakes, saying he had been told there was something wrong with his horse and she could not win.

During the inquiry, it emerged More Joyous had a foot abscess leading into her previous start, the Queen Of The Turf Stakes on April 6, in which she ran an unlucky fifth.

Stewards believed there were clear indicators which should have prompted the trainer to report More Joyous had a sore neck in the week before the All Aged Stakes.

They also said the mare's lameness for five of the eight days leading into the Queen Of The Turf and the fact she had not worked in her usual manner was reportable.

Waterhouse has maintained that as the trainer, she used her own judgment that the mare would be fit to race on both days.

More Joyous was retired after the All Aged Stakes and taken to England to be served by champion racehorse Frankel.

She has been confirmed in-foal and is expected to return to Australia in January.