How do I add or edit donations after importing from ItsDeductible?
The best way is to make your changes in ItsDeductible, then re-import the information into TurboTax. That way, your ItsDeductible and TurboTax programs are synchronized with each other.
After re-importing from ItsDeductible, you'll come to the Review All Your Charities screen in TurboTax. This lists the charity or charities you donated to, with the most recently-imported information at the bottom.
If any charities got duplicated during the import process, simply remove the oldest (topmost) instance by clicking the corresponding Delete button.