@rdegeline
...a big BUT...though.
_____________________________________
IF you really are using the "Online" software.
IF you've already filed your 2019 tax returns, do not touch your 2019 tax file in that Online account or you will destroy your 2019 tax file. Use a new separate Online account.
________________________
IF you are instead using the "Desktop" software, just save your 2019 tax file to a second Test filename with Save-As...then you can fool around in that new test file all that you want and use your already entered 2019 data as the starting point
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
