Ok, how does that happen?

Well, if you press the Preset switch twice on the H9, it switches from cycling through presets to cycling through algorithms.  You should see all of the algorithms on your H9 now.

If you want to replace some of the presets on your H9 with presets from the new algorithms, you can use H9 Control to do that, or you can create a preset on the H9 by cycling to the algorithm using the method I mentioned above and saving it directly on the H9 by long pressing the Preset switch.  (The user manual gives more details on how to save presets on the H9 itself.)