Srinivas,
RAD projects require migration to work seamlessly with MyEclipse. MyEclipse migrates projects that are RAD 6.x and WSAD 5.x (or higher) so they work in both MyEclipse and RAD simultaneously, removing the requirement of one-way migration. Once you migrate your projects to MyEclipse , you can continue using them in both IDEs.
The migration wizard appears automatically for projects requiring migration, but migration is not forced.
Here is a tutorial which outlines the migration of RAD project in MyEclipse :
https://www.genuitec.com/products/myeclipse/learning-center/websphere/rad-project-migration-tutorial/
Please also go through the Project Migration FAQ : https://www.genuitec.com/products/myeclipse/learning-center/basics/migration-faq/
Let us know if you further questions.