Partial shade is good too, of course. Full shade all the time isn't ideal and will probably slow down growth and reportedly lower the number of new flower buds. Full sun all the time also has it's problems. Especially in the case of an azalea with limited roots and in countries were the sun is quite intense, humidity low and the heat quite high.
Ooh, and when it is growing that of course is good. If it was dying, it would drop leaves and show signs of drought. It probably grew more new roots than new buds since collecting. Surely if it had had transplantation shock, you would have known by now.