Updated guide for deploying Network Controller using Microsoft VMM 2016 Technical Preview 4

There seems to be something fundamentally wrong with this description, or I'm not doing something correctly. I have spent many hours trying to figure out how everything works. In the "Validation" section, when attempting to follow the step-by-step instructions, while creating the second logical switch and trying to deploy it on the hosts that already have a management logical switch, the process always ends with an error saying "Cannot create virtual switch on the host 'host8.lab.test' because there already exists a virtual switch on the host that is managed by Microsoft Network Controller.".

How to deal with this?