WordPress to MediaWikia

I own a shared collaborative content site with multiple authors. Based on recent feedback I’ve been getting, we’ve decided that we want to transfer over to MediaWiki and forgo WordPress entirely. Right now, my site uses GoDaddy Managed WordPress so it’s not installed directly on my computer.

Is there a way to port all of our stuff to MediaWiki or do I have to rebuild the site from scratch? What would I have to do to make this happen?