I would think, many would report, if they had this behavior.
I don't use Ableton, but i have a Live 10 Lite version, and i have just tried this in a small test on Windows 10 verdsion 1909, and it work. The saved Farfisa preset is recalled on reload of Ableton and Project. That's all i as a user can do.
As said, then a demo load version the first preset in the list, when a plugin is loaded. That is what you exsperience. This behavior is also preventing unauthorized usage.