Aeotec NanoMote Quad group associations not working

RPi4 OH 2.5 release
Aeotec zwave controller

I have three of these devices. Two of them are working just fine in group association, controlling the target devices as expected. The third does not. I’ve excluded/included the device a few times and another thing I’ve noticed is that once I save its associations (paper or cabman), further changes are never saved. If I exclude/include the device, I can set associations again, but subsequent changes will not be saved. And yes, the device will work will rules. Anyone have any ideas? In the meantime, I’m going to clear the cache and try again.