Can I open two returns so that both are available to compare?

[Anonymous]

I am using TurboTax Premier, Desktop. I like to run the program twice as a way to check for entry errors. I save each version with different names. I would like to see both versions on my monitors simultaneously. When I try to open the 2nd version, while the first is active,  TT closes the active version before opening the 2nd. 

(The first time I submitted this question I did not provide sufficient detail.)

[SweetieJean]

TT Online is only good for one return per account.  Do you have two separate accounts? Are you trying to do What If Scenarios?

[Anonymous]

I'm using the desktop version.