Combining 3 large pdfs into one document but it keeps showing up as 3 files in the document

[dorisc24065201]

I am combining 3 books into a box set for a Kindle read.  When I open the portfolio, the three books show up in separate folders on the left and I have to open each one individually.  How do I get them to all open into the same file, where it is seamless?  Thanks!

[try67]

In the Combine Files dialog click on Options and change the file type of Single PDF.

[dorisc24065201]

Thanks!!!