Hey thanks for your comment. This is a really common annoyance that comes from the framework. If you want to get back to the factory presets, you have to deselect the currently selected expansion in the leftmost tab of the preset browser. Then you'll see the left-middle tab repopulate with the factory stuff.
It's extremely annoying and we're working to fix it! But you can still access the content, it's just a dumb way to do so. 😠
I hope that helps!