After you file

If the IRS agent told you to amend your return, you should go ahead and amend your return to remove your 2017 W-2 from your 2018 filing.  Here is a link to the instructions to Amend My Return in TurboTax.  

If you did not include your 2017 W-2 in your 2017 filing, you should also amend or file your 2017 return.  Here's a link to our Past Years Products.