How-to migrate Wpf projects to the new VS2017 format : <p>I'm migrating my projects to the new visual studio 2017 format which is working nicely for all standard libraries only now I run into problems with my UI libraries where I use Wpf / Xaml.</p>

<p>I cannot figure out howto do this for my user controls. The old  item doesn't seem to be valid anymore.</p>

<p>Anybody has an idea howto do this or if it's even possible.</p>
