Most of the internet based web applications are developed for online transactions and are target for users from different locations. Widely used browser for any of the online sites would be internet explorer than any other competitive browsers.
Quick test professional 11 and below versions support IE8 and below versions of IE. Organizations has to wait some more time to get the IE9 compatibility version of QTP.
Hope HP started working on this version of IE and provide us the required support as soon as possible.