Is there a way to retrieve a previous version of 2023 Turbotax software after it has been filed? The version used at time of filing... I subsequently went into the software to make changes for an amended return but did it the wrong way, and want to restart.
See this TurboTax support FAQ for how to cancel an amended tax return when using the desktop editions - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/cancel-undo-amended-return-turbotax-cd-download/L7glUWakU_US_en_US?uid=m02ij1lr
You are not looking for a previous version of the TurboTax software. You are looking for a previous version of your 2023 tax return.
TurboTax Online saves only the most recent version of your tax return. Once you make changes, there is no way to get the previous version back.
The instructions in the FAQ that DoninGA referred you to will remove the Form 1040-X, but they will not undo the changes that you made. You have to undo the changes yourself to get the tax return back to the way it was when you filed it. Step 6 in the FAQ tells you that you have to undo the changes yourself.