There is a workaround. You save the settings in Ozone 8 inside the plugin, not in the protools settings. Then you navigate to where that preset is lurking and move it into the same location in Ozone 9 and now you can open that old preset in Ozone 9. Google for more details if needed. I have done it once... Half a year ago. It works.
So, I checked... It is in Users/your name/documents/iZotope/Ozone 8/Presets/Global Presets
then just move it or copy it to Users/your name/documents/iZotope/Ozone 9/Presets/Global Presets