Hey Guys,
It does sound counter-intuitive to put the bark side down since you imagine that that the board will cup in line with the growth ring pattern since it forms a cup-like figure if you look at the end grain. However, what you look at with your eyes and process with your brain may not be right just because it looks right in this case.
I don't know what to tell you since I was always taught to put the bark side up, and it is hard to come to terms that I might have been doing it wrong all this time

.
Unless the shrinkage charts are wrong, flatsawn boards cup toward the bark

. Sheesh, who would have thunk it

.