I have a PDF that has highlights all over it that look to have been added through Acrobat, not from the Word file it was probably created in before it was converted to PDF. When these PDF's are placed into an INDD document, the highlights dont display or print. When the PDF is viewed in Acrobat print preview, the highlights do show.
How do I get these highlighted areas to print when placed in INDD like it will from the PDF?
It sounds like the highlights you are describing are annotations. And if so, you will need Acrobat to do this. In Acrobat > Tools > Preflight, then in Preflight panel, search the word "annotation" to find the Flatten Annotation Fix, do this and highlighted area will print in placed PDF.
That worked, thanks!