diff --git a/app/models/tag_implication.rb b/app/models/tag_implication.rb
index f8dc34bbe..ab7da6bc8 100644
--- a/app/models/tag_implication.rb
+++ b/app/models/tag_implication.rb
@@ -110,8 +110,15 @@ class TagImplication < TagRelationship
 
   module ApprovalMethods
     def process!
+      update_posts!
+    end
+
+    def update_posts!
       CurrentUser.scoped(User.system) do
-        update_posts
+        Post.system_tag_match("#{antecedent_name} -#{consequent_name}").find_each do |post|
+          post.lock!
+          post.save!
+        end
       end
     end
 
diff --git a/app/models/tag_relationship.rb b/app/models/tag_relationship.rb
index 3693f84cb..d6b0f5c73 100644
--- a/app/models/tag_relationship.rb
+++ b/app/models/tag_relationship.rb
@@ -118,16 +118,6 @@ class TagRelationship < ApplicationRecord
     end
   end
 
-  def update_posts
-    Post.without_timeout do
-      Post.raw_tag_match(antecedent_name).find_each do |post|
-        post.with_lock do
-          post.save!
-        end
-      end
-    end
-  end
-
   def self.approve!(antecedent_name:, consequent_name:, approver:, forum_topic: nil)
     ProcessTagRelationshipJob.perform_later(class_name: self.name, approver: approver, antecedent_name: antecedent_name, consequent_name: consequent_name, forum_topic: forum_topic)
   end
diff --git a/test/unit/tag_implication_test.rb b/test/unit/tag_implication_test.rb
index 99a84de10..f0f8d3625 100644
--- a/test/unit/tag_implication_test.rb
+++ b/test/unit/tag_implication_test.rb
@@ -116,13 +116,14 @@ class TagImplicationTest < ActiveSupport::TestCase
     end
 
     should "update any affected post upon save" do
-      p1 = FactoryBot.create(:post, :tag_string => "aaa bbb ccc")
+      p1 = create(:post, tag_string: "sword")
+      p2 = create(:post, tag_string: "sword weapon")
 
-      TagImplication.approve!(antecedent_name: "aaa", consequent_name: "xxx", approver: @admin)
-      TagImplication.approve!(antecedent_name: "aaa", consequent_name: "yyy", approver: @admin)
+      TagImplication.approve!(antecedent_name: "sword", consequent_name: "weapon", approver: @admin)
       perform_enqueued_jobs
 
-      assert_equal("aaa bbb ccc xxx yyy", p1.reload.tag_string)
+      assert_equal("sword weapon", p1.reload.tag_string)
+      assert_equal("sword weapon", p2.reload.tag_string)
     end
 
     context "when calculating implied tags" do