Using CD versions* To View Past Returns

Hi,

(Using Windows/CD versions)

I need to view my past returns.

A few months ago I could view my past return by double-clicking each application file and they opened without problems.

Just now when I double clicked 2020's(.tax2020), it asks me for "License Code".  When I did the same for (.tax 2019), it's asking to "update Turbotax".

Why are they doing this?

If I enter 2020 Turbotax license code, will all data be disappear?

Can I update .tax2019 without data being gone?

 

Thank you