You have the .tax2022 file from last year? You aren't importing it you are Transferring it. You can only transfer before you start 2023. So start over and start a new return,
To transfer into the Mac program you have to start a new return.
Don't go up to "File" on the TT toolbar within the program instead go up to the very top of the Mac's screen, way up to top left of the screen. There is a little apple there in the corner. Next to it, if you have TT open, it will show TurboTax. To the right of those words you can click on File and get the drop down that will give you "New Tax Return" so that you can start over.
How to transfer into Mac Desktop
https://ttlc.intuit.com/community/tax-data-file/help/how-do-i-transfer-last-year-s-return-into-the-t...
Mac automatically saves the .tax files. But you may have to search for it.
How to find tax files on Mac
https://ttlc.intuit.com/community/tax-data-file/help/find-your-tax-data-file-in-mac/00/26206
