Try going back to the dividends section of the Federal return and edit the information that was downloaded.
Double-check that in the follow-up questions after entering Form 1099-DIV information the box is checked stating that 'a portion of the dividends is from US government interest'. Then you will be asked to enter the amount from Federal obligations. This should then carry through to your SC return.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"