#419

backend/lib/tasks/sync_nico.rake

@@ -143,7 +143,7 @@ namespace :nico do
       desired_tag_ids = kept_tag_ids.to_a
 
       datum['tags'].each do |raw|
-        name = TagNameSanitisationRule.sanitise(raw)
+        name = TagNameSanitisationRule.sanitise("nico:#{ raw }").delete_prefix('nico:')
         tag = ExternalTag.find_or_create_by!(platform: :nico, name:)
 
         unless tag.nico_tag_versions.exists?