What do you mean by "re-import"? You have to do the transfer of the 2023 tax file in to 2024 at the very beginning before you enter any 2024 data at all. You cannot do that again after you already started working on 2024. If you did not transfer the 2023 tax file at the beginning, you will need to start over.
How to transfer last year’s return?
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/transfer-last-y...
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