I am looking at migrating a small/medium sized multisite from one virtual machine to another. The stumbling block is the IP address, and this must be a common issue to others. I am unable to take my msite IP address to the new vm - my friends @bytemark say this is not possible - presumably because it goes back to a pool and unavailable to the new virtual environment that is running on bigv.io.
There are literally dozens and dozens of A records to amend from all sorts of people, who I have never met, and multiple domain registrars. The msite has under a 100 sites. From experience mapping has always confused people.
What do the experts suggest?