# Required changes from 2.x to 3.x

### In Writer 2.1 

![](https://1689158591-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Ll6-u036-4GP1c0Pgyo%2F-MWiD7FnOuBDFrT5JD1c%2F-MWiDgaRdaVD_wSG4Igz%2Fimage.png?alt=media\&token=8acf23e6-479a-4c9e-8fdf-9bf4b6e4eaa7)

### From Writer 3.0 and forward

![](https://1689158591-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-Ll6-u036-4GP1c0Pgyo%2F-MWiD7FnOuBDFrT5JD1c%2F-MWiFBDoS9xbtDsI87zl%2Fimage.png?alt=media\&token=156b1fdf-365e-4aff-8c19-62ebee1fbac6)

{% hint style="info" %}
Do notice, that if you roll back from 3.x to 2.x, you will need to add the mapping for notifications that is required in that version. 
{% endhint %}