I have been operating 2 multisites on 2 different servers. Due to the age and clutter at the multisite on server 1 I've moved all my sites to server 2. I've kept all my email accounts on server 1 and adjusted my DNS settings to send the website visitors to server 2 and the respective email traffic to server 1. I want to delete all traces of the original multisite on server 1 and start over with a new one. Can anyone advise of the correct way to do this without disturbing any of the email accounts?