Can you help us run an exclude on the device labeled XXXXXX?
We would be happy to assist! We’ve sent a command for the switch you re referencing, but note that remote deletion commands for Z-wave devices will only be successful if the device is powered off and can no longer communicate with the Z-wave network. If it is still powered and communicating it can only be removed locally.
Also, once we have all the switches moved over to the Smartthings hub, is there a way to add the SEM to Smartthings as a secondary controller?
There is no official support for this kind of integration for the SEM, though it is the same as the Concord in terms of Z-wave controller I believe, so you might have limited success depending on the devices you are using. We have had reports of success with linking the Concord with Smartthings.
Pairing would be the standard steps to pair a device on the SEM, Smartthings may have controller specific steps.