I tried to assign one of my 2 systems to a parent. When I click save. the setting is apparently accepted but never shows up; the screen continues to show “none”. I’v tried 3 different browsers but to no avail. This is relevant because setting a system to “default” did not work for me in Firefox but did work in Chrome.
Both systems are assigned to the parent correctly, and the data is being aggregated to the parent.
Check that your browsers are accepting cookies etc.
I just managed to get it working but can’t explain why. I had the same problems with saving tariffs. If cookies ar use, I assume that I should NOT swittch browsers.