Is there any way to import a basic, exported Wordpress content XML file and have it replace the existing content? What I'm trying to do is synch up two instances of a site (development and staging servers) and all I want to replace is the Page content. When I try to import the XML document it simply states that all the pages already exist and nothing is done. Is it possible to override that warning and replace the content of the pages with the content of the XML?
One option might be to export both XML files, merge them using a file merging tool like http://winmerge.org, delete all posts and replace with the merged version.