That's awesome! My dog was recently diagnosed with liver cirrhosis (February '12) so we're still learning about it.
My dog had the opposite problem that led to her diagnosis- she gained ~10 pounds when her body suddenly started retaining fluid
But with a diagnosis and change in diet, she's at the healthiest weight she's ever been and back to puppy type energy even though she's 4 years old.
We're still trying new things to slow down the worsening of her liver and keep her going for as long as possible, so I'd love to hear more about your dog's story and what you're doing. Would you mind sharing a bit more about how you're treating it?
Yay for good vets and hope after diagnosis!