Just finished migration from a provider that I was no longer happy with to a new provider. Fully expecting them to turn me off the moment I said 'cancel', I prepared everything in advance, moved all the pointers over a few days prior to my planned day to tell them to 'shutoff', retrieved a final backup, then used their web billing interface to tell them I wanted to cancel service. Much to my surprise, they actually had a selection for "what date do you want to cancel service on". I set it to be the next day. I had no issues, but I do attribute much of this to "I migrated services beginning 6 months prior" (when I decided I was not going to renew... it was a 2 year contract). Note: Neither provider is local. As mentioned by others, it is your responsibility to maintain continuity of service when you move between providers. The best way I know to ensure this is to maintain control. Make sure your new system is up and configured before discontinuing your old system. - Eric