Do you mean you want the field groups to follow that order when you’re editing a post?
Here’s the thing with WP. Once you look at the edit post page and save a post WP remembers the order the field groups were in. The next time you edit that type of post WP will put them in the same order. Once this happens, changing the order or the display in ACF will have no effect. This is a problem with WP, not ACF.
