Let us know how it goes or if additional information from me could help. I hate to keep re-configuring, because as I noted before, it changes the device numbers of the children and I would like to have some scenes associated with these children yet not have to update these every time a child goes missing.
I concur that the children get somehow 'lost', but what could prevent this. In the case that I saw, my vera went through a startup and it was during this startup that it lost the child. After the startup, I then got the stray node for clamp 1. I have not lost my clamp 2 for many months, but it is currently not clamped on a wire so it always reads 0 anyways, but I can see that it is still configured.