I'm in the process of completely re-coding a client's website. Their current site is using WordPress for their blog only; The rest of the website is just hand-coded PHP. Their entire new site will be utilizing WordPress.
My question is, how do I import just the existing blog database into my current WordPress setup? In other words, I've installed a fresh WordPress into the new website's directory, and already added a bunch of pages and custom post types. Now I have to import all of the blog posts and comments from the old site, but I'm afraid of overwriting everything currently in the new database. How can I import the posts and comments without altering anything I've already completed?
Thank you for any insight you can provide.