Simple ... just transfer the amended tax file next year when you start the return ... all carryovers should automatically populate however it is still your responsibility to review the entire return for accuracy prior to filing.
2018 Downloaded to 2019 Downloaded
Do you have the 2018 tax file on your computer? It ends in .tax2018. You need that to transfer into 2019. First thing you do is start a new return and it should find all your 2018 files and ask if you want to transfer them.
Here's how for Mac:
https://ttlc.intuit.com/questions/1901265-transfer-last-year-s-return-into-turbotax-for-mac
Here's how for Windows:
https://ttlc.intuit.com/questions/1901506-transfer-last-year-s-return-into-turbotax-for-windows
