HI S.
We're in the same situation with our 6 year old daughter. She wears the nighttime pants, and many mornings she's dry. However, she's a deep sleeper and we can go for three or four nights in a row where she'll have wet in the night. When she gets up in the AM after wetting, she'll change herself and take care of things, only telling us if her sheets got wet as well. When she does go at night, she floods herself.
We tried waking her up early, we've tried getting her up in the night and nothing seems to make a difference. Incidentally my husband and one of his sisters had the same kind of history, so I feel sure by the time she's 9 we'll be done with this. We've kept it pretty low-key, explaining to our daughter that she will be able to be dry eventually but not to worry about it too much.
We've tried to restrict fluid intake in the evening, we avoid caffeinated beverages, and still it happens. Since she's already sensitive about it, we don't make a big deal about it but she won't consider sleeping over anywhere but Grandma's at this point since she doesn't want her friends to know she still wears the pullups at night.
I guess after reading other responses, we'll keep trying the wake up at night routine until she gets sorted out. She's our fourth child, and her next older sister (8 years) has a habit of waking just enough to try to find a bathroom and running into our room, where I wake up enough to send her to the bathroom. Once she goes, she's fine and goes right back to sleep! Every child is so different.
R.