Rob Archibald said the newly acquired stables at Flemington made it easy for the switching of horses between states, especially stayers.
Mormona had been a five-time winner in France before making his way to Australia with Saturday's victory his first in 11 starts since his arrival.
The gelding had indicated a win was near when second in Stayers Cup at Rosehill on June 28.
"There was no race in Sydney, so we came down here and it was the right race," Archibald said.
"They don't run many suitable staying races, so we're pleased to have a stable at Flemington and we can come down for these sorts of races.
"I'm not sure whether we back off him and come back for a few targets in the spring or whether we push on, but he'd been building for a nice run like that, so it was good to see him put it altogether.
"He'll get out over a bit further too, but whether he's ready for that this year or not, it might be something we look to in the future.
"He's still got a little way to go, but he's on the right track."