The recommended way to remove/exclude a Z-wave device is the use the remove/exclude option on the admin console. Here's a link to the document that explains removing a Z-wave device. https://docs.universal-devices.com/production/zw.pdf
If you use the removed failed device option as you have been doing, you should factory reset the device. Even though you removed the device from your eisy, it still has your eisy as its controller. Using the recommended method will remove the device from your eisy and remove your eisy from the device.