Update: The Question is Still Open, any reviews, comments are always welcome
As I already know lot QA's in stackoverflow regarding my topic, but most of them are closed and not properly answered.
Question 1) Steps for Migrating Rails 2.3.5 to Rails 3.x.x
Question 2) PitFalls and Traps
Question 3) Error Prone & Painfull Migration Phases
Note: I need Real Answers,Stuffs,Reviews and Suggestions are welcome, from those who involved in project migration from Rails 2.x.x to Rails 3.x.x