I am aware of the documentation for migrating Cloudron to a new server, but am unaware of how to test this while still keeping the old one running temporarily. Maybe I'm missing something or this is a total noob question, but wouldn't I run into licensing issues at that point having effectively two Cloudrons running?
The reason I bring this up... I'm considering moving away from a VPS at one provider and moving to another provider, but since I've never done the migration of Cloudron before I want to ensure I know how to do it first, particularly because there are a dozen client sites hosted on it right now and in particular two client domains that I have no control over their DNS as it is managed by another team for them, so I often have to wait for them to update the IP address before I can finally kill off any old server in favour of the new one.
So what I'm hoping to do is test the process, and once I know it's good, do a final restore point for any new emails that may have arrived in the hours or days between and then cut-over to the new server once and for all. But I have a few concerns such as the automatic DNS stuff... so I have many of my domains on DigitalOcean DNS and Cloudron controls it for me automatically. When I migrate to a new server, will it overwrite all the IP addresses for all of those domains right away, or will it wait for me to do something first? That's the part I'm most worried about in running this test. That and licensing of course.
How could I go about restoring/migrating to a new server while being in compliance with my license for Cloudron and not messing things up for my clients?
Any help would be appreciated.