Description of problem: Until FC6, when one set a static IP, then switched to DHCP, the static ip was disabled in GUI, but remembered between GUI restarts, so one could easily enable the same ip or switch to DHCP. Now static IP is forgotten after switching to DHCP and restarting GUI.
Workaround, create a copy of the device (one static one dynamic) and enable/disable it (first column in the list view).