EDIT: after some googling I can amend an existing return by selecting "Search Topics" (not "Search") and typing "Amend". That seems to do the trick. Thanks for the reply!
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Thanks for the reply. When I clicked the link for 2019 it says I don't have privilege to view it.
I tried to follow this link instead: https://ttlc.intuit.com/community/amending/help/how-do-i-amend-my-turbotax-online-return/00/27577
However, I could not find the "Amend a return (make changes) after it was filed and accepted by the IRS" option with an existing tax return. I could only find this option if I choose "New return", but then it loses the original return's information. It started by asking me what I want to amend. I picked "Business income & expenses" and then it started asking me about everything from "Personal income" as if I was filing a completely new return.
