Accessory dwelling not considered in appraisal

[Brook Davenport]

I am currently under contract on two dwellings on the same lot, both have been used for short term rentals. I received my appraisal back, and the appraiser didn’t consider the second dwelling (studio, no kitchen but bedroom and bathroom). 

I have previous rental numbers on the studio, and am waiting on the listing agent to decide on rebuttal info. Has anyone had a similar problem, or know any creative fixes? Thank you for the help!