If you want change a TurboTax version, no matter if you want to upgrade it or downgrade the package, you are not required to deactivate TurboTax account. All you need to do is to clear and start over. The option for clearing off and starting over again can be found from left hand side menu of your TurboTax account. Once you have cleared everything, you can choose the package and upgrade the program or downgrade it according to your personal preferences.
