I started developing a site with over a dozen custom post types. I'd like to rename a few of them, not just the display value, but the actual custom post type name. I'm worried however that by just running a SQL update query that I'll miss some places where I need to change things or overwrite part of serialized data. I have already inputed over 3,000 items, so I can't just restart with a clean database.
What would be the best way to rename a custom post type? How about renaming a taxonomy?