If the state issued the check the first time, they will re-issue. A check not delivered should go back to the FTB.
CA FTB refund says:
Did not receive refund, or refund check was lost or damaged
If you haven’t received your refund yet, allow enough time to process your tax return.
If you still haven’t received a refund, or your check was lost or damaged, contact us.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
