It will indeed scroll through the macro sets (I referred to them as pages), and that's exactly when they start disappearing on me. I'm sure I'm looking at the right numbers. On WHM I have 5 sets filled, scrolling through them for a while makes me end up with less than 5 sets filled. The same happened when I first encountered it on WAR, sets 10, 1 and 2 have macros and I ended up with only set 2 having macros.

I can't explain it, but it happens.