fly migrate-to-v2: Apps with volumes support 🎉

Trying to upgrade an app I got the error:

Error: cannot migrate app farmish with autoscaling config, yet; watch https://community.fly.io for announcements about autoscale support with migrations

I thought I’d just disable autoscaling to do the upgrade, but I discovered that’s not working (See: Autoscale disable not working?)

Is there a way around this yet?