No you do not need to send your refund back, but you do need to amend your return. You should not try to
amend your return until the original return it has been fully processed and you
have received your refund or your payment has cleared.
Amended returns do not “catch up” to your original return and replace them;
they are processed as two separate returns.
Amended returns have to be printed and filed by mail. It can take the IRS
up to 12 weeks or longer to process them. If you are due a larger refund
than on your original return, your amended return should only show the
difference and you will receive a separate check for it. If you owe money
on your amended return, it will show only the new amount owed, you will have to
mail a check with the return. Click here for amending instructions: https://ttlc.intuit.com/replies/3288565
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