Turns out I had to destroy the old home, this allowed me to destroy the
spurious imported but locked group, this in turn allowed me to add the
items to a new group. So clunky, badly designed and badly documented.
I have the same problem. I moved, and created a new home, and moved some
devices to it. The new home then had a group I didn't create, want or
need, apparently brought in from the old home, because the devices were
in that group at the old home. Whic...