I have had a ZMatter dongle plugged into a test Polisy for some time, for trying out Zwave devices. Now I'd like to move it to my eisy (which is my house controller) to replace the Zooz dongle I've been using since last fall. I started by doing a factory reset of the ZMatter dongle in the Polisy. I'm following all the wiki steps for the migration process, creating a migration backup, etc. Then I restore the migration backup and switch the dongles right before the IoX restart, and let it restart. But the devices don't update. It does rename the nodes to ZY... as discussed in some forum threads, but it appears the interview process is failing. All I get are placeholder nodes. I tried the interview manually on some devices but I get errors in the /var/isy/FILES/LOG/ZWAY.LOG file, as shown below.

Thankfully restoring from the pre-upgrade backup and plugging the Zooz dongle back in works, but I'd like to be able to complete this migration. Any hints as to what might be wrong? I've gone through the whole process twice, with the same results.

Retesting the ZMatter dongle with the Polisy works fine, so it's functional.

I'd like to add that with the ZMatter dongle plugged into the eisy, I also tried adding a new ZWave device. It detects the device when I press the button on it, but the interview also seems to fail.

Unfortunately, I have never tried such a migration (have always use the zwave boards from UDI), so I will be of very-limited assistance. Still, a couple of things come to my fuzzy memory about zwave....

• I was not sure that a backup from a zooz dongle could be used to populate a zmatter dongle. (This was just something I thought I saw somewhere. My confidence is not high.)

• If a zwave device is already linked to a network (zooz dongle, for example), I did not think that device could be then added to another (such as zmatter) without removing it from the original. I wonder if the error messages you are seeing are an indication of this.

The migration process has you create a "migration backup", which is different from a regular IoX backup. This is part of the process you get when you click on the "Migrate to ZMatter" button in the Configuration screen. You then restore this backup, which prompts you to restart IoX. This is when you switch dongles, as per the wiki article. The process updates the ZMatter dongle with your existing devices. That seems to work, but cannot seem to interview them.