Yes. Certainly configuration of devices will not work - you’ll need to use another software package for this (eg Open ZWave, or even using OH1 and HABmin1). I think that also features like the network neighbour diagram will also not work as properties will also not be stored, so it’s quite limiting.
Really, I wouldn’t recommend it, although I understand why you want to use text files. I wrote a text (json) database that allows the UI to work, but all the data is stored in a text file which can be backed up and edited - unfortunately this isn’t available although I did see something from Kai a couple of days ago that indicated he might be looking to make it available in OH2 one day.
