@jzb @brnohat one needs something like this only once in a few years. I think that's why no one started such a project before. The time I spent on it will probably not pay off in my own migrations, but hopefully it will help others. It's nothing fancy, just a 400-line script, but invested quite a lot of time into how each domain works and it's a shell script, so easily tweakable and extendable. And ultimately it does the job.