You Transfer from 2018 into a new blank 2019 return. How did you do 2018? How/where do you want to do 2019?
How to transfer into Turbo Tax Online
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-transfer-last-year-s-return-into-...
Then after you start 2019 you can Import W2s and 1099 forms.
Importing 1099 forms
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-import-my-1099/00/26254
