If you have already submitted your return and it's been accepted by the IRS for processing, there's 2 things that could happen:
1) The IRS will process it as you filed it and give you the refund you expected.
2) If their system finds a mistake or catches any discrepancy, they will send you a letter with more instructions.
It's recommended that you wait until the IRS fully processes your Tax Return before making any changes, to avoid a delay in processing. Once your Return has been fully processed, sign back into your account and complete and submit an Amended Return, and fix any mistakes previously made.
