I don't know why that happened, but you can compare your Form 1040 and schedules 1 to 3 with the same forms and schedules from the previous year to see if everything looks right.
To view your form 1040 and schedule 1 to 3:
Choose Tax Tools from your left menu bar in TurboTax Online while working in your program
Choose Tools
Choose View Tax Summary
See the Preview my 1040 option in the left menu bar and click on it
Choose the Back option in the left menu bar when you are done
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