I'm trying to move my blog's homepage from a directory to the root, but I want all the urls for all the posts and pages to remain the same. The only url I want to change is mysite.com/blog to mysite.com. I want the post urls to still be mysite.com/blot/page-title/. I've read http://codex.wordpress.org/Moving_WordPress#Moving_WordPress_Within_Your_Sand
http://codex.wordpress.org/Giving_WordPress_Its_Own_Directory but these moves seems as if the urls of all the posts will be changed, and will be mysite.com/post-title/. Is there anyway to just move the homepage and to leave everything else the same?
This blog has 2,000+ pages and is relatively old and runs a lot of plugins so I don't really want to change the post urls.