I can certainly understand how frustrating it is to lose hours of manual work in an instant.
Because TurboTax Online saves your progress in real-time to the cloud, there isn't a 'Version History' or 'Undo' button that can roll back the return to the state it was in prior to the CRA import. When Auto-fill My Return is activated, the software prioritizes the official tax slips found in your CRA My Account to ensure accuracy, which results in the existing manual data being replaced.
Unfortunately, in the Online version, the only way to "Clear" is to use the Clear & Start Over tool, which unfortunately deletes everything.
Thank you for choosing TurboTax.
