Moving from dev folder to live

Hi.

I am a newbie so be kind please 🙂

I am moving my site from a dev folder to live. I have changed the url under settings- general. I have copied the files over and saved the permalinks.

The site loads okay and works apart from the home link on the menu. When clicked it still takes me to the dev site. The other links work okay.

What have I done wrong and how can I fix this?

Thanks
Stephen