}
		}

		// save associations
		if association.saveAssociation( /*clear*/ true, values...); association.Error != nil {
			return association.Error
		}

		// set old associations's foreign key to null
		switch rel.Type {
		case schema.BelongsTo:
			if len(values) == 0 {
				updateMap := map[string]interface{}{}
				switch reflectValue.Kind() {
				case reflect.Slice, reflect.Array: