Move changes between development site and production

Hi all,
I have some experience with WordPress but not much of a technical nature. We have a WP site that is replicated somewhat on 2 different web server hosts. One location is used by an inexperienced site designer (my boss) as a “development” ot “test” site to try different themes, page layouts, etc. The other location is the public facing “production” site.

I have already done a complete “copy” from one host to another following the typical guidelines. I changed the URL in Settings and then downloaded the entire contents of the “test” site. I also created a backup of the database including structure and data.

On the new host I created a blank MySQL database and imported the backup. Then I uploaded the site contents into an empty httpdocs folder. I edited the database connection information and everything worked fine.

Now here is the problem. Some minor changes have been made in the “test” site. A “Contact Us” page has been added along with a form and a new plugin for creating forms. There have been no new posts…as the site is set for using Pages as the default.

Is there any way to move those changes without completely killing the “production” site and replacing it with the changes in “test”?

I am asking because my boss is asking me…”can’t you just copy over the changes?” In a standard HTML site I would do just that…ftp up the newer files. But in WP I am stuck as to the correct way to accomplish the same thing.

Thanks for any help