Way to go, David. Hope they don't pout for too long, and bloom for you sooner rather than later. All mine have sulked for a year or two when I've moved or divided them. They really do like to be all crowded and cozied up to bloom well.
However . . I need to divide my big pot of them this year, too. Going to be a wicked job because I foolishly potted them in a pot that has a lip on the inside, so the whole root mass will not come out easily, I'll have to cut it up.