Although Bluehost will do everything possible to ensure that your
migration goes quickly and smoothly; it is important to understand
that your account will be moving from one physical server location to
another. During migration the IP address attached to your domain name
will be changed from your old server IP to your new server IP. This will
cause a temporary interruption in email, ftp, and the visibility
of your website.


This window of interruption occurs because most Internet Service Providers
(ISP's) take 24-72 hours to clear their Cache.


Although this window could last approximately 24-72 hours it typically
only lasts 48 hours before your site becomes fully functional again.