diff --git a/lib/tasks/attachments/fix_missing_asset_replacement_links.rake b/lib/tasks/attachments/fix_missing_asset_replacement_links.rake
new file mode 100644
index 00000000000..f88825d6df6
--- /dev/null
+++ b/lib/tasks/attachments/fix_missing_asset_replacement_links.rake
@@ -0,0 +1,21 @@
+desc "Fix missing replacement links"
+task :fix_missing_asset_replacement_links, %i[csv_path] => :environment do |_, args|
+  csv_path = args[:csv_path]
+
+  CSV.foreach(csv_path, headers: false) do |row|
+    attachment_data_id = row[0]
+    attachment_data = AttachmentData.find(attachment_data_id)
+
+    if attachment_data.replaced_by_id.nil?
+      puts "ERROR - ad: #{attachment_data.id} does not have a replacement."
+      next
+    end
+
+    begin
+      AssetManager::AttachmentUpdater.replace(attachment_data)
+      puts "OK - ad: #{attachment_data_id}" << "\n"
+    rescue StandardError => e
+      puts "ERROR - ad: #{attachment_data_id}, message: #{e.message}" << "\n"
+    end
+  end
+end
diff --git a/test/unit/lib/tasks/attachments/fix_missing_asset_replacement_links_test.rb b/test/unit/lib/tasks/attachments/fix_missing_asset_replacement_links_test.rb
new file mode 100644
index 00000000000..3d9eb7567a4
--- /dev/null
+++ b/test/unit/lib/tasks/attachments/fix_missing_asset_replacement_links_test.rb
@@ -0,0 +1,89 @@
+require "test_helper"
+require "rake"
+
+class FixMissingAssetReplacementLinksTest < ActiveSupport::TestCase
+  extend Minitest::Spec::DSL
+
+  describe "fix_missing_asset_replacement_links" do
+    let(:task) { Rake::Task["fix_missing_asset_replacement_links"] }
+    let(:file) { Tempfile.new("read_assets_file") }
+    let(:filepath) { file.path }
+    let(:attachable) { create(:news_article) }
+    let(:attachment_data) { create(:attachment_data, id: 123_456, attachable:) }
+    let(:replacement_data) { create(:attachment_data, attachable:) }
+    let(:replacement_data2) { create(:attachment_data, attachable:) }
+    let(:original_asset) { attachment_data.assets.original.first }
+    let(:thumbnail_asset) { attachment_data.assets.thumbnail.first }
+    let(:replacement_original_asset) { replacement_data.assets.original.first }
+    let(:replacement_thumbnail_asset) { replacement_data.assets.thumbnail.first }
+
+    teardown { task.reenable }
+
+    before do
+      csv_file = <<~CSV
+        123456
+      CSV
+      file.write(csv_file)
+      file.close
+
+      original_asset.asset_manager_id = "1592008029c8c3e4dc76256c"
+      original_asset.save!
+      thumbnail_asset.asset_manager_id = "1592008029c8c3e4dc76256d"
+      thumbnail_asset.save!
+      replacement_original_asset.asset_manager_id = "2592008029c8c3e4dc76256c"
+      replacement_original_asset.save!
+      replacement_thumbnail_asset.asset_manager_id = "2592008029c8c3e4dc76256d"
+      replacement_thumbnail_asset.save!
+
+      attachment_data.replaced_by = replacement_data
+      replacement_data.replaced_by = replacement_data2
+      attachment_data.save!
+      replacement_data.save!
+      replacement_data2.save!
+    end
+
+    test "it outputs AttachmentData ID and sends correct load" do
+      Services.asset_manager.stubs(:asset).with(original_asset.asset_manager_id).returns("id" => "http://asset-manager/assets/#{original_asset.asset_manager_id}", "name" => "original.pdf")
+      Services.asset_manager.stubs(:asset).with(thumbnail_asset.asset_manager_id).returns("id" => "http://asset-manager/assets/#{thumbnail_asset.asset_manager_id}", "name" => "thumbnail.pdf.png")
+
+      expected_output = <<~OUTPUT
+        OK - ad: #{attachment_data.id}
+      OUTPUT
+
+      Services.asset_manager.expects(:update_asset)
+              .at_least_once
+              .with(original_asset.asset_manager_id, { "replacement_id" => replacement_original_asset.asset_manager_id })
+
+      Services.asset_manager.expects(:update_asset)
+              .at_least_once
+              .with(thumbnail_asset.asset_manager_id, { "replacement_id" => replacement_thumbnail_asset.asset_manager_id })
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal expected_output, output
+    end
+
+    test "it logs if no replacement is found" do
+      attachment_data.replaced_by_id = nil
+      attachment_data.save!
+
+      expected_output = <<~OUTPUT
+        ERROR - ad: #{attachment_data.id} does not have a replacement.
+      OUTPUT
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal output, expected_output
+    end
+
+    test "it logs error if update fails" do
+      error = GdsApi::HTTPClientError.new(404, "Not found")
+      Services.asset_manager.expects(:asset).with(original_asset.asset_manager_id).raises(error)
+
+      expected_output = <<~OUTPUT
+        ERROR - ad: #{attachment_data.id}, message: Not found
+      OUTPUT
+
+      output, _err = capture_io { task.invoke(filepath) }
+      assert_equal expected_output, output
+    end
+  end
+end