Master document starts paragraph numbers over

I have a master document with 10 chapters. The chapters all start with a Heading1 and the numbers from 1 to 9 are fine. But at chapter 10, it starts over with 1.

It looks like the Heading1 paragraph text flow is the same as in the other chapters.

What have I done wrong?

Check you didn’t inadvertantly modify chapter 10 Heading 1.

Select it. Clear manual formatting with FormatClear direct formatting.

Then, check paragraph properties with FormatParagraph..., tab Outline & Numbering. Uncheck Restart at this paragraph box.

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