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Just allow to click-and-drag the numbers to where you want it in order for runes and masteries so if you do switch them around you don't have to clear and remake the pages.
(nvm. just saw someone else posted the same thing and that there is a specific front end interface forum which should be renamed "Launcher Interface Discussion" or Launcher Discussion", instead of "PVP.net Discussion". No one knows what PVP.net is and it sounds like a networking or stability discussion.)