Looks like the link mentioned here no longer exists. I don't get the same error when trying to file, but the worksheet is incorrectly limiting my mortgage interest deduction. My situation in 2021:
Converted primary home to rental property
Purchased new home
Initial mortgage was immediately sold to another servicer
Refinanced a couple months later
I have 4 1098's and 2 active loans, but the loan balances are being added together to determine that my interest should be limited, even though the outstanding balance on my primary home is < $750k
