This is what I found under TurboTax On Demand Tax Guidance:
1. Input just 1 1098 to cover the refinance.
2. Gather all your 1098s related to the refinance.
3. Separately add up the amounts in Boxes 1, 5 and any property taxes paid.
4. Box 1, Box 5 and Property Taxes - input the total amounts for each on the refinanced debt.
5. Box 2 - Input the amount of debt on 01/01/2020.
5. Box 3 - Mortgage origination date - Input the oldest date on your 1098s related to the refinance.
