Comment 6 for bug 1466148

That's really weird. I'm 100% confident that I did move the Admin network in the UI in 6.1 nightly release of 2015-06-13, but I can't reproduce on nightly build of 2015-06-19 it does restrict moving the network like you said. Maybe because of some special edge case / condition the restriction in the UI wasn't there. Feel free to mark as invalid until I can reproduce with steps listed above.