I filed my 2018 Tax return on 04/01/2019 and if I file my return now ,after the updates , what will changes?

 

After you file

If you have already filed your return, then you can’t file it again. If you have changes to make on your return, you can do so through the CRA or through ReFILE: https://turbotax.community.intuit.ca/replies/2647992