fix method for previous data corruption

app/models/merged/section.rb

@@ -92,5 +92,14 @@ module Merged
       s
     end
 
+    def self.fix_cards
+      Section.all.each do |section|
+        next if section.template_style.has_cards?
+        puts "#{section.id}: #{section.card_template}"
+        section.card_template = nil if section.card_template
+      end
+      Section.save_all
+      nil
+    end
   end
 end