Assuming both 1098-s are correct, enter each 1098 one at a time, starting with the one from the original loan first. When you enter the 2nd one, read the screen; all of it. It's important that you make the correct selections on that 2nd 1098 screen so the program doesn't think you had two separate mortgages at the same time. Otherwise, your mortgage interest deduction on SCH A could be limited if your outstanding mortgage balance exceeds $750K.