Yesterday I tried to move my single WordPress website to multisite WordPress installation. Unfortunately, for many reasons described here it failed. Then I found a simple plugin called Domain Mapping System, which gave me a possibility to map category Norwich in my WordPress to norwich.photo domain. It still does not work like I want. Changing the domain from rozenek.com to norwich.photo does not change all hyperlinks. So any button pressed inside of domain norwich.photo takes me back to rozenek.com. Also the pagination urls do not work properly.
Does anyone know any better solution?