I had to do an amendment in 2023. how do I import 2023 taxes (both my original return and my amendment) into my TurboTax 2024 taxes?

You just need to transfer the amended return, not the original one.  The amended return has everything in it.

Sounds good...  However, the amount of data on the 1040X was very limited.  But maybe all the data in the Amendment file but just not displayed....  Is that correct?