Thanks. Your reply gave me confidence to call the Dept of Revenue. Two odd things: 1) DOR doesn't show an overpayment credit carried forward until the return is filed and the credit is requested. 2) TurboTax didn't carry the credit forward after the extension. I wouldn't have known it was "lost" except that I estimated too much for the IRS and not enough for MA. That made me investigate what happened.
Thanks again.
