[Help !] After post-url edition, there are no two post with same content. [Help]

I have a problem to

Yesterday i edited one of my post url and the content of the post. After i clicked update, some strange things happened.
One of my menu from menubars disappeared and the post i updated, is not appeared on home page. besides. there are now two post with same content.

I created the post under “media editor” category.

First, i created this post (url 1)
http://serialkeylar.com/total-video-converter-key-full-version/

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.
http://serialkeylar.com/total-video-converter-key-hd-full-version/

[Note : I created redirection from url 1 to url 2. but that dosn’t work]