I agree. The program should alert the preparer directly as a result from the input on the 1098 mortgage worksheets. If the preparer marks the sheet as primary or secondary residence the program should automatically calculate the allowed deduction based on the input. It’s definitely a flaw in the program. Please update the 1098 worksheets and do away with the limit worksheets that aren’t readily visible to the user. The program should at the very least alert the user they are over the allowed limit.