fixes #720

app/controllers/posts_controller.rb

@@ -1,5 +1,6 @@
 class PostsController < ApplicationController
   before_filter :member_only, :except => [:show, :show_seq, :index]
+  before_filter :builder_only, :only => [:copy_notes]
   after_filter :save_recent_tags, :only => [:update]
   respond_to :html, :xml, :json
   rescue_from PostSets::SearchError, :with => :rescue_exception
@@ -76,6 +77,13 @@ class PostsController < ApplicationController
     end
   end
 
+  def copy_notes
+    @post = Post.find(params[:id])
+    @other_post = Post.find(params[:other_post_id].to_i)
+    @post.copy_notes_to(@other_post)
+    render :nothing => true
+  end
+
 private
   def tag_query
     params[:tags] || (params[:post] && params[:post][:tags])