• The migration guide is historically at
  https://community.jboss.org/wiki/HibernateSearchMigrationGuide#jive_content_id_Hibernate_Search_54
• Some parts have been moved to http://hibernate.org/search/documentation/migrate/5.0/
• More recent migration details (post 5.0) are back to the wiki page
• http://hibernate.org/search/documentation/migrate/5.0/ has no link back to the global migration guide
• The default link from http://hibernate.org/search/documentation/ points to http://hibernate.org/search/documentation/migrate/5.0/
• There is no landing page for http://hibernate.org/search/documentation/migrate/

We need to make a decision, is the migration guide going forward going to be on the website or be back in the wiki? Depending on the decision, http://hibernate.org/search/documentation/migrate/ must be created with pointers to the old wiki for 4.x and dedicated pages for the 5.x and http://hibernate.org/search/documentation/ should point to the generic migration page.

If we keep it in the wiki, then the 5.0 migration should be back on the wiki.