Comment 2 for bug 1398820

I suspect the envs names are the issue here. There were problems in openstack in the past were machines from another env were taken down because one name is a subset of the other. Juju appends "-1", "-2" to the machines and groups is creates, and the other env has "-1"; it looks like a subset.

In my own experience, I avoid -number. I use letters or some other characters to separate like a 0, -01.