I did manage to get the alarm.com z wave devices to show on the ISY. It took an ISY "synchronize nodes" to do so. The ISY does not appear in the Alarm.com software so I can't do anything on that side. This meant that I could not make the ISY the primary controller which for me is a deal stopper. Can't add/remove devices with the ISY and have to poll the Alarm.com devices because there the ISY does not get state change notifications.
I have given up. I only want to know when the system is armed anyway. I intend to build a bit of bridging hardware so that when the system arms and "turns on" the z wave device it will close a contact wired to an Insteon IOLinc. I am waiting for the relay which should come next week.