I wanted to change from /%year%/%monthnum%/%postname%/ to /%postname%/%post_id%/ would this regex below be correct? Source URL: /(\d*)/(\d*)/(\d*)/([A-Za-z0-9-]*) Target URL: /$4/(\d*) someone said that it would run the risk of replacing something like site.com/category/parent/child to /postname/post_id. if that is the case then what should I do to avoid that