V1 Hub Conversion to Aeotec Hub: best practices? {includes discussion of moving in phases}

I also have over 50+ devices and need to migrate them from Nvidia Shield Smatthings Link to the new Aeotec Hub.

It seems there is a “Primary Controller shift” option for z-wave devices to migrate from broken hubs etc and that Smarthings supports it per… Promote/Demote Z-wave Primary/Secondary? - #8 by duncan

I also see the option… “Join or Leave Existing Z-Wave Network” for the new hub. It’s supposed to show only when there are no devices installed.

Is anyone more familiar with it? This way I can get about 70% of my devices migrated. Rest are zigbee devices for me.

Thanks.