Hot answers tagged preview
Preview does not support this. You need more advanced PDF editing software, like Adobe Acrobat Pro or PDF Outliner.
You could use a combination of tools to remove the old ToC, and attach a new one: use PDF SAM ("split and merge"; it's FOSS and cross-platform) to take off the old ToC; use PDF Outliner ($4.99 in Mac App store) to generate a new one. See other helpful tools in another Q&A.
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