The loss showing on the transferred Schedule C may be due to calculated depreciation. Since the Schedule C does not apply to your 2018 return and to prevent it from showing up in your return you should delete the form. The easiest way to do this is to switch to the Forms view (Ctrl+2), click Open Form, and search for Schedule C, highlight it and click Open Form. When the form populates in the main window, click "Delete Form" at the bottom of the screen (be sure to delete any sub-forms relating to the Schedule Cbefore deleting the main form).