As I previously mentioned, I'd got a basic migration of configuration and content from the Drupal 6 Gallery Guide to a new Drupal 8 site up and running fairly quickly. It's clear that a lot of good work has been done on the various migrate modules.
This is the beauty of cycling - the rhythm puts serious activity in the brain to sleep: it creates a void. Random thoughts enter that void - the chorus from a song, a verse of poetry, a detail in the countryside, a joke, the answer to something that vexed me long ago.
Robert Penn - It's All About the Bike: The Pursuit of Happiness On Two Wheels