- name: "Outdated indices of Advanced Search migrations"
  announcement_milestone: "14.10"
  announcement_date: "2021-04-22"
  removal_milestone: "15.0"
  removal_date: "2022-05-22"
  breaking_change: true
  body: |
    As Advanced Search migrations usually require support multiple code paths for a long period of time, it’s important to clean those up when we safely can. We use GitLab major version upgrades as a safe time to remove backward compatibility for indices that have not been fully migrated. See the [upgrade documentation](https://docs.gitlab.com/ee/update/index.html#upgrading-to-a-new-major-version) for details.
  stage: enablement
  tiers: premium, ultimate
  issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/359133
  documentation_url: https://docs.gitlab.com/ee/development/elasticsearch.html#deleting-advanced-search-migrations-in-a-major-version-upgrade