Oh, dear. I did a big no-no.
So, I was typing in my story’s final version when I realized a scene needed to be added. So, I did. I mean, it wasn’t like I was adding plot (was I?) and I definitely didn’t add any characters. In fact, this fleshes out a later scene.
Now I have to change a few downstream revisions. I’m sensing a snowball effect here. Hope it doesn’t turn into that.