Import existing z-wave network configuration, HA as secondary controller. Possible?

I (finally) got my Pi Zero W and Razberry working. So, now I would really like to import my existing Z-wave configuration from my Intermatic Ha07 into Home Assistant, and have HA as a secondary controller. I really, really, really, do not want to have to remove all my existing devices and add them back into HA. In fact, if there is no way to do this, I’ll just give up and move on to some other solution.

So, can HA act as a secondary controller, and if so, how do I do the import? I’m pretty sure that OWZ can do it, and I know that Z-way can.