I think I did not communicate properly my question. Actually My concern is using turbo tax for 2023 for the sole proprietorship. If I change my Fed EIN # in Quickbooks this month January 2024 for the conversion to a sole member SCorp before I use TurboTax to figure my 2023 taxes as a sole proprietor - will that mess up TurboTax calculating my 2023 tax return as the sole proprietor when I import the Quickbooks file - since the FEIN will have changed but the Quickbooks computer file name will not change- Or should I start a completely different business file on quickbooks for the S corp? I’m afraid to change the FEIN on Quickbooks until I know the answer to my concern. I’ve contacted Quickbooks but they referred me to TurboTax support for the answer.
