The issue has new comments that covers the investigation to ensure that all content gets relocated and covered.
Good progress was made to decide how to clean up the Docusaurus to avoid removing information that should still be there, even if only as an archive
Older versions of the Docusaurus needs to be cleaned up. Need to look into how to backport the changes we made to the latest master.
Backporting in general is a tough a challenge in the project currently
Lucas is working on cleaning up the Contribute section entirely in the current version
Documentation to cover the quick deployment of Magma to try out the software should live in Docusaurus
Developer environment related documentation should either be added to the Contributor Guide or being linked from it to make sure that contributors find that information