@Critter thank you. It's my first time with a filing this complex. Since I am using the interview method, it wasn't clear to me that it all appears the same on the final form. In any case, I think I prefer doing it @Carl's way - I went through the whole thing using your method and Carl's, and the depreciation deduction amount and tax refund amount came out exactly the same in both cases, so it doesn't seem to matter. Thanks for your help!
