I want a smooth transition between "Migrate" and "Migrated"

Testing #335590

I felt like my screen shook around when I hit the big blue button to migrate. I was expecting something softer... a "You did it!" a ":+1:" idk.

Instead I get thrown to

I even saw a notification appear behind the Customization screen? but it disappeared.

Calm my nerves that my customizations made the journey over.