State tax filing

Are we sure the TurboTax software is correct on this matter? Mississippi subscribes to the same limit of $10,000 as the federal limits, but I think that should be applied to line 3c (rather than line 3a) of MS Form 80-108, Part 1: Sch A. The $10,000 limit would be a limit on the total deduction taken on the MS form, not the amount pulled from Federal Form 1040, Schedule A. TurboTax seems to be pulling from line 7 of  Federal Form 1040, Schedule A rather than line 5d.