Using some of the information from this article, and information from a few other sources, I have come up with a procedure for connecting two separate local DDEV containers for Drupal 7 to Drupal 9 migration work.
- Create your Drupal 7 container from the source. In this case, we will be using a Pantheon-based website.
- Follow these directions to set up a local version of your Pantheon site.
- Create your new Webspark 2 (Drupal 9) site in Pantheon.
- Follow these instructions to create your Pantheon D9 site.
- Install and enable modules in the new D9 site. (If you want to migrate content from D7 that is related to a module in any way, you will have to install that module in your D9 site, or the Migrate API won’t know to include it.)
- Use Compo