They will reappear. The interface is simply representing the command classes that the device advertises as child devices. It tries to be as smart as possible about this whilst still remaining generic. One reason that Vera failed so badly to work with many devices is that each one needed a database entry, that was generally poorly written and maintained. A design philosophy for the ZWay plugin is that there is no such database. The price you pay is a less than perfect representation.
You have at least two choices:
move uninteresting devices to a different room
hide those devices (but this can be confusing for future maintenance)
If there is a genuinely generic situation which should be handled by the plugin, it’s possible to add that, as has been done in a couple of cases. But generally, compound devices are represented by a combo parent with specific child devices, some of which are not interesting. Dimmers are commonly an example, and tamper switches another.