react-native-router-flux: Nested scenes not working in 4.0.0

I have the following structure

<Router>
  <Scene key="root">
    <Scene key="unauthenticated" type="reset">
       <Scene key="intro" component={IntroScene} initial={true} />
    </Scene>
    <Scene key="authenticated" type="reset">
      <Scene key="profile" component={ProfileScene} initial={true} />
    </Scene>
  </Scene>
</Router>

I have unauthenticated and authenticated scenes for sanity.

When I run Actions.authenticated() from IntroScene, I get an error saying:

There is no route defined for key authenticated must be one of 'intro'.

This worked previously, but I updated to ^4.0.0-beta.11 and it no longer works.

Do I need to flatten my scenes?