I realize this is old, but did you ever figure it out? I was wondering instead of listing under Estimated Tax Payments / State Estimated Taxes, instead put it under Other Incomes Taxes / Withholding not already entered on a W-2 or 1099. Our K-1 has Footnotes that discuss both estimates paid AND withholding, but the amounts are the same for the most part. I haven't checked to see how it flows to the state returns
