This answer is relevant if your website has been designed and built by BT. View FAQs for Web Hosting if you built your website. If you're not sure which website package you have, please read How to get support for your website.
When your new BT website is ready to go live, we'll provide instructions to send to the company who manages your previous website and they will be advised to update a setting called the 'A' records.
This process is called Smart Hosting. Nearer the time we'll send you these instructions or you can find them at the 'Getting started' help section.