Axe Edit is currently not available for download so I needed to find another way to load 3rd party IRs. I found all of the information on the Fractal wiki and will show you how to do it on a Windows machine.
I cover loading an IR but the process would be the same for a preset.
Links:
http://wiki.fractalaudio.com/axefx2/index.php?title=Impulse_Response_(IR)
http://www.midiox.com/
http://www.korg.co.uk/downloads/m1/support/SysExMIDIOX.pdf