The export is one missing step. I see that the device has been merged into the binding, but not yet compiled (should happen soon). However, the problem you have is the updated jar only works on OH4.0. You have to have the binding with the new XML on your OH instance for the channel to appear.
One option is to copy the xml from the Zwave github and add it to your current jar along the lines of this post then update your binding using the documentation.
Another option would be to upgrade to OH4, then update the bundle when it is available on this site.