Using SimpleFormController instead annotation in Spring 3.0

Hi,
We are moving from spring 2.5 to Spring 3.0. Right now we have our controller based on SimpleFormController and we know that it is deprecated now but we cannot change our codebase to use annotation.

We are using Websphere portal 7 and spring portlet framework.

We have found that after migration where there is one portlet with multiple controller, first time default controller is being called which is fine and we set renderParameter as per need to call render of other controller by setting "action" in submit of our default controller. Problem is then when behavior is weared, after that it should call default controller again wheenever that portlet being displayed instead it just calls render of that second controller.

We dont know yet its because of spring3/websphere portal 7/?

These code base working fine in prod with websphere portal 6 adn spring 2.5
-Miral