For the past year, I've been using custom post types to distinguish my different post types (duh). Thing is, I'm now realizing that categories are more efficient in offering archived pages for these different types of posts.
As is, my custom post types are rewriting the permalink structure to show domain.com/post-type/post.php
I want to revert to the more standard permalink structure of domain.com/%category%/%postname%/
Thing is, I know this is going to break the URLs spread around the web to my already existing pages and I want to avoid that.
So for example, with the post type "review" my url would be domain.com/review/post.php when I want to switch to using category "reviews" for the url domain.com/reviews/post.php
To avoid breaking URLs, what would the best thing for me to do?