Exporting DB content can be tricky if your configuration is not standard. This plugin handled my situation with grace and speed.
I Found the initial wording of the plugin to suggest that it did custom post types, only to be met with a prompt to purchase another plugin on my first attempt. I wanted to make an angry rating, but then I read more closely and it doesnt claim to do custom post types.
So be aware, this DOES NOT DO CUSTOM POST TYPES, it does custom meta. If you can stand the few bucks to cover the additional cost to do those custom post types, the plugin works great.