I would like to change my existing username of 'jkdavidson' to be the same as my profile name 'roseparks', so that web address of posts would be http://roseparks.wordpress.com instead of http://jkdavidson.wordpress.com. However I would also like all existing posts to be moved across to the new username. Does this happen automatically when changing the username. I do not want to start a new blog.
Please note I do not want to do the easier option of changing my profile name.
Thanks for your help.
The blog I need help with is jkdavidson.wordpress.com.