Hey @AndyRussG, here are a couple examples of quirks I've encountered with CN campaign settings in the last week. In the Limit Traffic screenshot, you can see that I get the Limit traffic slider, even though I haven't toggled the Limit traffic option. In the LargeBannerLimitandSwitch screenshot, you can see that none of the sub-options under Legacy hiding... or Impression diet or Large banner limit and switch are showing up.
I am seeing this pretty frequently - the campaign in which I'm working most often right now is C1617_jaJP_dsk_FR. Open and refresh that campaign's settings page and perhaps 1 in 3 times I see something odd with settings.