Gai Waterhouse has continued her bid to have charges in the More Joyous affair dropped, appearing before the Racing Appeals Tribunal on Friday.

Waterhouse was convicted of two charges under rules relating to a trainer's obligation to report any condition of a horse in the lead-up to a race which may affect its performance.

After the Racing NSW Appeal panel dismissed Waterhouse's appeal against the charges, she took it to the higher level.

Judge David Armati has reserved his decision.

The More Joyous inquiry was sparked by public allegations from the mare's owner John Singleton that Waterhouse knew she could not win the All Aged Stakes on April 27 last year.

After More Joyous finished second last in the Group One race, Singleton sacked the trainer in a television interview.

Singleton was fined $15,000 for improper conduct.

Stewards also fined Waterhouse for not reporting More Joyous had a sore neck in the days before the race.

During that inquiry it emerged More Joyous had a foot abscess a week before the Queen Of The Turf Stakes on April 6 in which she ran an unlucky fifth.

The trainer was again charged under the same rule and again fined.

Waterhouse's counsel argued it was a judgment call on the part of the trainer and the mare had improved by the time acceptances were taken on the Wednesday before the race.

The trainer was fined $5000 and $2000 for the two charges and warned by the Racing NSW appeal panel it would consider increasing the penalties if she appealed further, prompting her to take her case the higher body.