i'm guessing the repotting has helped cure whatever was ailing the plant. i don't think the older growths will look 'right' again, but may plump up a bit, but the new growths may come in much better now. someone once gave me a cattleya in similar condition. 2 years later i gave it back in bloom. the old canes never really stood up tall again, but the new growths came in nice and strong.