Any taxes owed will be on the amended tax return Form 1040-X on Line 20.
You do not change anything on the tax return that was filed to amend a tax return. You Must use Form 1040-X
Remove any changes you made to the filed tax return.
See this TurboTax support FAQ for amending a tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...
