There's a section in the H9 Control user guide explaining how to copy a preset and paste it to another preset position or how to swap it with a preset at another position. Check out the "Moving Presets Around in a List" section in the user guide (which also is bundled into H9 Control under Settings / Help):
http://eventide.com/AudioDivision/Products/StompBoxes/H9ControlUG1.aspx
