After making some changes to one of my web pages and upon uploading, I lost that page file, it was totally gone from my sitemap.

So I opened the last saved copy, and that missing file shows up in that site map. What I was trying to do was to copy that file from the older saved copy and paste it into the latest map that it was missing.

This, I thought, would be the easiest way to recover that missing page file in the older saved site map, and create the new missing page by pasting it into where it used to be in my current site map. X5 won't let me do this.

Does anyone know how I can do this?  I spent so many days perfecting that page with schema code, etc. If I have to create the new page as close to the original missing one, I am concerned it might show up as duplicate content and have other issues.

Has anyone had any success copying a file from an older site map (less than 30 days) and using it in the current working web site? 

I would be very appreciative of X5 users that can help me through this.

Thank you very much. Giulio