Is there a way to link the enterable Form 4797 to a specific activity?  The asset (a vehicle) is linked to a Schedule E, but I have to make the sale entries manually since the business use percentage varied each year.  If I were to enter the sale directly on the asset worksheet, it would carry the gain or loss to the Form 8582, but I can't do that in these circumstances, but I still need to get the sale linked to the correct activity.  Form 8582 does not allow manual entry.  Is there a way to get my 4797 linked to Sch E and Form 8582?