Each line in that document is a separate paragraph.

There are thirty one paragraphs highlighted in bold?

There are six groups of paragraphs highlighted in bold.

What is it that you want to change them for? Do you want to change the whole lot for the content of a cell in Excel? Or do you want to change the blocks for the contents of six cells? Or do you want to replace 31 paragraphs with the content of 31 cells? Whichever it is you need to identify the cell(s).
Is the block always going to end with "*****THIS IS A COMPLETE UNDERTAKING*****"?

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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