Yesterday i edited one of my post url and the content of the post. After i click update, some strange things happened. One of my menu bars disappeared and the post i updated was not showing in home page. besides. there were two post with same content.
I created the post under "media editor" category.
First, i created this post (url 1)
Then i edited the url into (url 2), description, and meta description. .In url 2 you will find "media editor" menu in main menu bar. but in url 2 it will disappear.
[Note : I created redirection from url 1 to url 2. but that dosn't work]