'Copies to and from both branches'

def copy_all_asset_metadata(self, source_course_key, dest_course_key, user_id):

    for revision in [ModuleStoreEnum.RevisionOption.published_only, ModuleStoreEnum.RevisionOption.draft_only]:
        super(DraftVersioningModuleStore, self).copy_all_asset_metadata(self._map_revision_to_branch(source_course_key, revision), self._map_revision_to_branch(dest_course_key, revision), user_id)
