Everything in my network is Zwave+. I don’t believe that is the case, as it only takes my network around 20 minutes to completely heal. I have also had power outages before (usually less than a few minutes though), and I regularly power cycle my hub and/or devices.
Also zwavejs2mqtt indicates on the interface that it is healing the network. It specifically noted these devices as dead, not healing. If I attempted to heal, it would actually skip these devices as it considered them dead.
I think it is clear that something was compromised on the devices in this suspected surge, but somehow whatever happened to them was able to recover. I am just hoping it isn’t intermittent.