What did you save? The .tax2024 tax file? Sorry you can’t do what you wanted. Online is only good for 1 return. Any changes will overwrite it. You can’t restore from your computer. That is only possible if you use the Desktop download program. You could get the Desktop program to open the original .tax2024 file you saved.
You can buy the Desktop Download program here,
https://turbotax.intuit.com/personal-taxes/cd-download/
When it said to import or transfer your previous tax return, it means to transfer from 2023 to start 2024.
