Investors & landlords

If I report the rental sale in the Sale of Business Property section then how do I close out the rental in the asset/depreciation section under Rental and Royalites? (I had the rental house itself listed as asset and took depreciation on). What do I enter for the Assest Sale (Buiness portion only), Asst Sales Expenses..etc?  If I leave it blank then I dont know if TT will close out the asset.  If I enter Zero then refund dramatically increases, which I know cant be correct.