Business & farm

TT Business does not allow business mileage to be entered. It does not allow vehicles to be added or removed. It says only actual vehicle expenses can be entered. It has done this to me for 8yrs. Help outside TT suggested I total std mileage amounts outside TT and enter them as misc vehicle deduction.  I lost 7yrs of vehicle deductions because of the mistake. On the order of 30% of profit. Huge loss. I have 25+ yrs experience with 1040 products that allow std mileage deduction correctly. TT Help has already had access to my problem and issued a case number. How to do it and it can't be done are the same problem.