Tag management working but can't remove default tag from module

lib/orbit_tag/taggable.rb

@@ -77,4 +77,28 @@ module OrbitTag
       Tag.where(default: true)
     end
   end
+
+  module Merging
+    protected
+
+    def create_default_tag(name, taggings, module_app_ids)
+      create_tag(@module_app, name, taggings, module_app_ids, true)
+    end
+
+    def create_tag(module_app, name, taggings, module_app_ids=[module_app.id], default=false)
+      new_tag = module_app.module_tags.create(name_translations: name, module_app_ids: module_app_ids - [module_app.id], is_default: default)
+      taggings.each do |tagging|
+        tagging.taggable.taggings.create(tag_id: new_tag.tag.id) unless tagging.taggable.taggings.detect{|t| t.tag_id.eql?(new_tag.tag.id)}
+      end
+    end
+
+    def merge_default_tags(name, taggings, module_app_ids)
+      create_default_tag(name, taggings, module_app_ids)
+    end
+
+    def merge_tags(name, taggings, module_app_id)
+      module_app = ModuleApp.find(module_app_id)
+      create_tag(module_app, name, taggings)
+    end
+  end
 end