Switch to Outline view, and then insert a subdocument as follows to include the text Megan has already written:

a$.$ With the insertion point on the section break above the Table of Figures heading, show the entire document.

b$.$ Insert the document Support$\_$WD$19\_9$a$\_$Content.docx to incorporate Megan's content.

c$.$ Select the subdocument and then unlink it so that the subdocument becomes a permanent part of the master document.

d$.$ Close Outline view.