I don't recommend including your list numbers in the same outline list series as the headings. What happens if you need appendices or you have more than one list in a section without a Heading in between?

I think you get a lot more flexibility by setting up the List Number series as its own outline list. If you want to have it automatically restart with each new list, link the level one style to your body text style (eg Normal). Don't include numbers on that level one style so that the List Number is linked to the second level so it restarts after the Normal style has been used.

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Andrew Lockton
Chrysalis Design, Melbourne Australia