If you must make a change, please explain it.
It's clear you already have your hands full, so please continue with what you have to do.
However, when you have a moment, please review the two versions of Imagine all the people, living life in peace, available here:
One goal of collaborative platforms like wiki is to offer participants in a given community an opportunity to "improve" on each other's work. In the real world, not all such "improvements" are seen in the same light.
That said, the contributions made to improve the article's structure -- undone by your edits -- took another PortlandWiki volunteer (me) considerable time. That volunteer took pains to improve the article's clarity. While that doesn't necessarily mean "job well done," it does mean that it isn't necessarily appropriate for another contributor to come along and simply unwind previous edits made by the previous contributor.
Rather than simply overwrite another editor's contributions (assuming those contributions aren't obvious vandalism, etc.), please simply "correct" any "mistakes" or other "confusing" language, and let all improved formatting, internal / external links, etc. remain in place.