Z Wave conversion from "Z Wave" to "Z Wave JS UI" issues

[freshcoast]

Ok, that makes a bit more sense.

Now when you refer to “native Z-Wave”, are you referring to the long obsolete OpenZWave-based integration (legacy Z-Wave), or the Z-Wave JS official add-on? If you are referring to the latter, you can follow this guide to switch:

Switching Z-Wave JS Addons with Minimal Downtime! Z-Wave JS (Official) to Z-Wave JS UI (Community)

Introduction This guide describes how to switch from the Z-Wave JS official add-on to the Z-Wave JS UI HA Community add-on, without losing any downtime caused by the re-interviewing of nodes. In this guide, Z-Wave JS UI will henceforth be abbreviated as ZUI. Who is this guide for? This guide is for HAOS add-on users who have already installed the official Z-Wave JS add-on and the companion Z-Wave integration, and desire extra functionality that isn’t provided by HA, such as: Adding and remov…

If you mean OpenZWave, there’s no migration path. You can just install Z-Wave JS UI and start over. You don’t need MQTT.