diff --git a/gossamer_forums.rb b/gossamer_forums.rb
index 737f804..1ab768a 100644
--- a/gossamer_forums.rb
+++ b/gossamer_forums.rb
@@ -1950,9 +1950,9 @@ class GossamerForumsImporter < ImportScripts::Base
   
           # Update the topic's last reply information
           topic.update!(
-            last_posted_at: post.updated_at,
+            last_posted_at: post.created_at,
             last_post_user_id: post.user_id,
-            bumped_at: post.updated_at
+            bumped_at: post.created_at
           )
   
           update_highest_processed_personal_id(msg_id)
@@ -1972,13 +1972,13 @@ class GossamerForumsImporter < ImportScripts::Base
     private_message_topics = Topic.where(archetype: Archetype.private_message)
   
     private_message_topics.each do |topic|
-      last_post = topic.posts.order(updated_at: :desc).first
+      last_post = topic.posts.order(created_at: :desc).first
 
       if last_post
         topic.update_columns(
-          last_posted_at: last_post.updated_at,
+          last_posted_at: last_post.created_at,
           last_post_user_id: last_post.user_id,
-          bumped_at: last_post.updated_at
+          bumped_at: last_post.created_at
         )
         puts "Updated topic ID #{topic.id} with last activity at #{last_post.updated_at}"
       else