Thanks JimP and Charles Kenyon. I just did a quick read through on the article you posted. It sounds very similar to what I've been doing. But, there are definitely some differences I'll need to take a closer look at and do some playing. Like I said, I've been able to save multilevel lists I've created to the List Library successfully in the past. But, now that option is unreliable. The piece here that is very different is the linking headings with lists and such. I'm used to just setting everything up in the Multilevel list and saving the new format to the Library. I've got some work to do. Thank you for your time.

I'm unfamiliar with your use of the term Library. That sounds a lot like a Word Perfect term but may be something else. When setting up a numbering list linked to styles it is important to follow all of the steps. While Shauna uses the built-in heading styles in her examples, you can do the same thing with custom styles.

Be aware, though, that for some purposes the built-in headings are magical. Why use Microsoft Word’s built-in heading styles? by Shauna Kelly