Maybe it is better to name each section with a unique name, even if they are the same in style. Then we will probably see that by changing the ID’s, the old ID disappears. Because each section has a different class.
A tip: This is not useful for ID’s, but also by naming each section separately, even if they are the same in style, we can have a clear visual navigator panel on the left site, navigating quickly from one section to another, especially when the sections are closed and we can’t see the sub-Div Blocks under the sections. Am I right?