UPDATE: I was able to fix this by DEselecting “Allow Document Pages to Shuffle” and “Allow Spreads to Shuffle.” Or perhaps I only need to do one of those, but I was trying everything in the book and happen to uncheck those. Once I deselected those, I was able to move the spreads back to the way they needed to be. Of course, I had to do each of them individually, which would be tedious if you had a very large document already created. Definitely something that I will have to remember to do at the beginning of creating a document. (Luckily, this particular one is only six pages.) I’m wondering if there is a quicker way if this issue returned.

This chapter (web page) takes you through how numbering is supposed to work in Word and the various controls. It is useful, but primarily on SEQ fields and simple numbered lists and also as reference showing the menus, dialogs and controls and going through the concepts for outline numbering. To actually set up outline numbering that works, refer to the Kelly and McGhie articles.
Changing the numbering display affects how pages are indicated in the InDesign document, as in the Pages panel and in the page box at the bottom of a document window. The numbering display also affects how you specify page ranges when printing and exporting the document. However, the numbering display does not change the appearance of page numbers on document pages. numbering in indesign