How can we restart Turbotax desktop or remove data files not necessary.

I started to amend a taxdata created  in 2019. Then I loaded an incomplete data file by mistake.

Since there is  no way to roll bak. I want to t orestart Turbotax in a clean state.

When I exit  from Turbotax and restart it , data file that existed aredisplayed. I do not want  any data files.

 

Once data file is loaded, it is saved periodically  without Save command. Therefore,  we cannot go back to a correct state which was saved.