81718c3bf6b741bfc3fc0fbd03e6d1db9861b561,featuretools/entityset/entity.py,Entity,_vals_to_series,#Entity#Any#Any#,633

Before Change

        // we"ve had weird problem with pandas read-only errors
        out_vals = copy.deepcopy(out_vals)
        // no duplicates or NaN values
        return pd.Series(out_vals).drop_duplicates().dropna()

    def _filter_and_sort(self, df, time_last=None,
                         training_window=None,
                         columns=None):

After Change

            out_vals = pd.Series(instance_vals)

        // no duplicates or NaN values
        out_vals = out_vals.drop_duplicates().dropna()

        // want index to have no name for the merge in query_by_values
        out_vals.index.name = None

        return out_vals

    def _handle_time(self, df, time_last=None,
                     training_window=None,
                     columns=None):

Instances