Have you tried deleting the entire Schedule C form and then adding the form again. You can delete the form in the delete a form section of TurboTax

• Login to your TurboTax online account

• Click Take me to my return or Pick up where I left off

• Click Tax Tools (located in the left side bar), then Click Tools

• Click Delete A Form in the Tools Center pop up box

• Click Delete next to the Schedule C form in the Review Forms List Screen (you may have to scroll down)

After you delete the form, go back and add the Schedule C

• In the search box (located in the upper right hand corner), type in Schedule C
• Click the Jump to Schedule C link that appears in the search results
• This will take you to the area of TurboTax to add the form again.