You can make the corrections within TurboTax itself without importing it.
Go to the federal interview section of the program as follows:
- Select Income & Expenses
- Select Self-employment income and expenses
- Proceed through the screens to edit your information regarding your business.
- Select Edit to the right of the applicable 1099 form to make any corrections as needed.
Please see the following link for more information on reporting self-employment income and expenses.
Self employment income and expense guide