2023 TurboTax error for Montana itemized deduction for medical insurance premiums

I was looking at my Montana return because Intuit will not accept my credit card to e-file my state return, wondering if there is an error that is holding up the process.  I noticed that my itemized deductions appear higher than I would have expected. Line 2 of my itemized deductions schedule is approximately, but not exactly, twice the amount it should be.  I had ACA credits in 2023 and had to complete IRS Form 8962, Premium Tax Credit, which appears to be input correctly. If someone knows what entry floods into Line 2 for the Montana itemized deductions, it would be greatly appreciated.