I don't know the answers to all your questions. If you need to close a business schedule C, see this article on closing a business
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FAQ post on closing
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Go to Federal Taxes Tab
Wages and Income,
Choose Jump to Full List -or I'll choose what I work on
Then scroll way down to Business Items
Then…..
Business Income and Expenses - Click the Start or Update button
You should see the Business Summary page that lists your businesses, (right below the list you can Add Another Business)
Then click EDIT by the business name and the next screen should be a list of topics,
Business Profile, Income, Inventory/Cost of Goods Sold, Expenses, Assets, and Final Details last.
Click Start or Update by Business Profile
Then click Edit by the item you need to change
Disposed of business in current year is the 4th Edit button
