With the new user interface, there is way too much white space, and for a window with only a few dropdowns, you have to scroll, which doing things quickly, is super inefficient. On the screenshot, you should be able to see all the items on my monitor, but you can't.
Also, why are there 4 pages to edit the campaign details? Can you make this all on one page, or split between two pages? That would make it even easier. I feel no one gave you guys feedback on usability of the new UI. Right now, the interface feels super efficient and is almost miserable to use. Like, even with the older interface framed in so you see the new and old interface at the same time, it feels like this interface was thrown together and pushed live before it was fully ready for actual customers to use.