Apart from the point support provided by HP will end by 2011 are there any high level reasons to migrate to qtp ?
For continue maintenance, keep in mind that your application will change and will evolve but if winrunner is no longer updated chances are that your application under test may out grow the testing tool.
Alfredo R. Rivera
IT Principal SDLC Automation Subject Matter Expert
Certified Mercury Interactive Instructor
Certified Tester, Foundation Level (CTFL)