Since your W-2 has income to report, you should file an amended return. It may impact what you owe. It is not possible to tell without looking at your return.
You could try creating a "dummy" tax return with all of your information included on it to see what the impact might be.
You can use this IRS tool to determine if you should amend your tax return, click here and select "Begin" to enter your information. It will ask you questions about your issue.
Click here for additional information on if you need to amend your tax return.
Click here for additional information on amending your tax return.
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