# Changes and Backwards Compatibility Overview

## Telerik RadEditor for ASP.NET AJAX

A complete list of all changes can be found on Release History page:

[https://www.telerik.com/products/aspnet-ajax/whats-new/release-history.aspx ](https://www.telerik.com/products/aspnet-ajax/whats-new/release-history.aspx)

## Telerik RadEditor for ASP.NET AJAX Q1 2010

RadEditor for ASP.NET AJAX which is part of the Q1 2010 release is fully backwards compatible with its previous version (Q3 2009).

## Telerik RadEditor for ASP.NET AJAX Q3 2009

RadEditor for ASP.NET AJAX which is part of the Q3 2009 release is fully backwards compatible with its previous version (Q2 2009).

## Telerik RadEditor for ASP.NET AJAX Q2 2009

RadEditor for ASP.NET AJAX which is part of the Q2 2009 release is fully backwards compatible with its previous version (Q1 2009).

## Telerik RadEditor for ASP.NET AJAX Q1 2009

* Total redesign of the skins, which aims for a uniformity of the appearance of all controls in the suite in the cases they are used to build RIAs

* Refactoring of the CSS code to achieve better understanding, easier maintenance and handle problems with global styles

* Changes to the CSS classes, so now all controls for ASP.NET AJAX comply with a common naming convention For example was: **radeditor Default** now: **RadEditor Default**

## Telerik RadEditor for ASP.NET AJAX Q3 2008

**Removed dependency on SessionState**. If your custom dialogs depend on the Session object, see the following KB - [Using Session State in Custom Editor Dialogs](https://www.telerik.com/support/kb/aspnet-ajax/editor/session-in-dialogs.aspx)

## Telerik RadEditor for ASP.NET AJAX Q2 2008

RadEditor for ASP.NET AJAX which is part of the Q2 2008 release is fully backwards compatible with its previous version (Q1 2008).