How do you copy a page from preview to duplicate it?

Hello,

I want to copy a page from preview so that I have 2 pages that are the same. Before I upgraded to Maverik, I used to be able to right click on the page (in the sidebar) I wanted, click "copy" then right click in the sidebar and click "paste".

Now when I right click on the page in the sidebar I don't get the option to copy and paste.

I found that if I opened a new copy of the same document, I could import it into my working draft then delete all of the pages I didn't want, but that is way too much work. If someone could help I would be very grateful.

Thank you so much!