There are no 'pages' in a Word document, which is at the root of your problem. Word is not a page layout application. Text is flowed between the margins in a variety of 'story ranges'. Think in terms of a pile of transparencies each contributing to the whole. Change one part and it has a knock-on effect on the rest.

Your document appears to have either multiple sections, or it has page formatting that includes different headers. You cannot willy nilly remove header information without giving consideration to the underlying document structure.

If you can post a copy of your document to the forum ('go advanced' and attach) we would be better placed to advise. Delete or change any sensitive or personal information first.

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Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com