Replacement Nivomat for normal shock absorbers

Hello together. In the Sufu I read that you can’t just replace the Nivomat dampers with normal ones. So far so good. But why? What’s different about the normal ones (except of course the Nivo balance)? And if it’s really not possible, what do I have to do? I’ve always read about a complete suspension. I don’t look through it somehow. And I’ve looked a little bit after the nivomates. I see a connection to the pictures. Or is the one on the pictures n I found just not to see?