diff --git a/ee/app/graphql/resolvers/vulnerability_filterable.rb b/ee/app/graphql/resolvers/vulnerability_filterable.rb
index 672a1f1efe517790330f0e484428e698cc0d2b9d..571eb6cf58c3b469be595e4bbe9f86d19b5839b1 100644
--- a/ee/app/graphql/resolvers/vulnerability_filterable.rb
+++ b/ee/app/graphql/resolvers/vulnerability_filterable.rb
@@ -61,16 +61,10 @@ def use_elasticsearch?(filters)
     end
 
     def validate_reachability!(vulnerable)
-      valid_vulnerable = vulnerable.is_a?(Project) || vulnerable.is_a?(Group)
-
-      es_migration_completed = ::Elastic::DataMigrationService
-        .migration_has_finished?(:backfill_reachability_in_vulnerabilities)
-
-      return if valid_vulnerable && es_migration_completed
+      return if vulnerable.is_a?(Project) || vulnerable.is_a?(Group)
 
       raise ::Gitlab::Graphql::Errors::ArgumentError,
-        'The \'reachability\' argument is not currently supported on security center dashboard or ' \
-          'the required migrations are not completed.'
+        'The \'reachability\' argument is not currently supported on security center dashboard.'
     end
 
     def validate_validity_check!(vulnerable)
diff --git a/ee/elastic/docs/20250702131958_backfill_reachability_in_vulnerabilities.yml b/ee/elastic/docs/20250702131958_backfill_reachability_in_vulnerabilities.yml
index 2cd01771e4db9958915494e3450c05ed36f82933..01c27c746dee8234ba25f664af7eacc98b0c8ce7 100644
--- a/ee/elastic/docs/20250702131958_backfill_reachability_in_vulnerabilities.yml
+++ b/ee/elastic/docs/20250702131958_backfill_reachability_in_vulnerabilities.yml
@@ -5,12 +5,12 @@ description: Backfills Vulnerabilities Index from PostgreSQL to backfill reachab
 group: group::security infrastructure
 milestone: '18.3'
 introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/198141
-obsolete: false
-marked_obsolete_by_url:
-marked_obsolete_in_milestone:
+obsolete: true
+marked_obsolete_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/209384
+marked_obsolete_in_milestone: '18.6'
 skippable: true
 skip_condition: >-
-  This migration will run on SaaS and Dedicated GitLab instances.
-  For Self-managed instances decision is awaited and is tracked in
-  https://gitlab.com/gitlab-org/gitlab/-/issues/525484.
-  For Self-managed this migration will be skipped and can be introduced later based on product direction.
+  This migration will run on SaaS and Dedicated GitLab instances. For
+  Self-managed instances decision is awaited and is tracked in https://gitlab.com/gitlab-org/gitlab/-/issues/525484.
+  For Self-managed this migration will be skipped and can be introduced later based
+  on product direction.
diff --git a/ee/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities.rb b/ee/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities.rb
index d4b86e92081737a2395094d6c9bcadf57ee69f13..98cc5a3f77ec7071f182aaa67302b4abc86c868e 100644
--- a/ee/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities.rb
+++ b/ee/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities.rb
@@ -37,3 +37,5 @@ def dedicated_with_es?
 
   delegate :sass_with_es?, :dedicated_with_es?, to: :class
 end
+
+BackfillReachabilityInVulnerabilities.prepend ::Search::Elastic::MigrationObsolete
diff --git a/ee/spec/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities_spec.rb b/ee/spec/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities_spec.rb
index 0f19f963bd877d696c352b4f94a6edb7b0313558..b38b88452a88552d21b2125f8964577afb658627 100644
--- a/ee/spec/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities_spec.rb
+++ b/ee/spec/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities_spec.rb
@@ -3,15 +3,6 @@
 require 'spec_helper'
 require File.expand_path('ee/elastic/migrate/20250702131958_backfill_reachability_in_vulnerabilities.rb')
 
-RSpec.describe BackfillReachabilityInVulnerabilities, feature_category: :vulnerability_management do
-  let(:version) { 20250702131958 }
-
-  describe 'migration', :elastic do
-    it_behaves_like 'migration reindexes all data' do
-      let(:objects) { create_list(:vulnerability_read, 3) }
-      let(:factory_to_create_objects) { :vulnerability_read }
-      let(:expected_throttle_delay) { 30.seconds }
-      let(:expected_batch_size) { 30_000 }
-    end
-  end
+RSpec.describe BackfillReachabilityInVulnerabilities, feature_category: :global_search do
+  it_behaves_like 'a deprecated Advanced Search migration', 20250702131958
 end
diff --git a/ee/spec/support/shared_examples/graphql/resolvers/vulnerability_filterable_shared_examples.rb b/ee/spec/support/shared_examples/graphql/resolvers/vulnerability_filterable_shared_examples.rb
index b5bf249009f75081b6061c7a7fea715dd2238a47..e72c1bb7a2cd3c4375549cbadc09b0e07d57a63d 100644
--- a/ee/spec/support/shared_examples/graphql/resolvers/vulnerability_filterable_shared_examples.rb
+++ b/ee/spec/support/shared_examples/graphql/resolvers/vulnerability_filterable_shared_examples.rb
@@ -31,20 +31,6 @@
       end
     end
 
-    context 'with reachability' do
-      let(filter_key) { { reachability: 'IN_USE' } }
-
-      before do
-        set_elasticsearch_migration_to(:backfill_reachability_in_vulnerabilities, including: false)
-      end
-
-      it 'raises an ArgumentError' do
-        expect_graphql_error_to_be_created(Gitlab::Graphql::Errors::ArgumentError) do
-          subject
-        end
-      end
-    end
-
     context 'with validity_check' do
       let(filter_key) { { validity_check: [Security::FindingTokenStatus.statuses.each_key.first.upcase] } }