Strange associations to Zwave.me switches

[pz1]

My Z-wave.me wall switches show associations to non-existant devices as shown in image below. I have tried to remove them with expert commands. At first it looks as if they have gone, but after a while they are back.
See attached image

[cj2000zwave]

I have a duwi wall switch which started acting strange, it was associated with everspring sensor and settings would just not be maintained.
I replaced it with the zwave.me version of the switch and works fine again. Apparently the original duwi switch suffered from ghost devices.