XElement Replacement when Child Elements and Value Exist

I have some Xml that I am trying to change the name of the XElement on. The XElement contains both child elements and a value similar to this

<parent>
  Hi I am a value <a href="link">link</a>
</parent>

I tried using the method suggested here but i can only copy either the elements or the value. Setting the elements first and then the value wipes out the elements.

<newparent>
  Hi I am a value link
</newparent>

Copying the value and then elements duplicates the element text

<newparent>
  Hi I am a value link <a href="link">link</a>
</newparent>

String manipulation of the value itself escapes all of the brackets.

<newparent>
  Hi I am a value link &lt;a href="link"&gt;link&lt;/a&gt;
</newparent>

Does someone know of a way to achieve the result of copying the value and elements over to the newly created element correctly?