If you have
multiple 1098 mortgage forms, you’ll enter them one at a time. After going
through the steps with the first one, you can add a lender when you get to
the Mortgage
deduction summary screen. (In the
case of a refinance, it's best to enter the 1098 from your original loan before the 1098 from your refinance.)
But, if they're
both from the same lender, and one of them has
the “Corrected” checkbox marked at the top, enter the corrected 1098
and discard or shred the other one.