Use T2Express v2013.2 as example. We will show how to import from the .t12 file used by T2Express v2012.2.
- First run T2Express v2013.2, and choose menu "Start | Import from last year return"
- Select the .t12 file you want to convert to new T2 return file
- Choose import option, you can import previous tax notes, and/or keep all previous data amounts
- Finally you will have a new T2 return file