I am Malaysia citizen. Recently I had to renew my Malaysian passport, but my Indian visa still valid up to 2015 in my old Malaysian passport. Can I carry both passport and travel through Malaysian immigration and Indian immigration.
As per the information mentioned on India Visa Center in Malaysia (responsible for processing Indian Visa applications in Malaysia), you can travel with your old passport (and of course the new one), which has a valid Indian Visa. Though, they also mentioned that you can get the VISA transferred through an application.
The office address along with the phone numbers for the Kuala Lumpur office are mentioned here.
I would strongly urge you to contact them and get clarifications from them. The information on the website might not be reflecting the latest changes in the rules or regulations. What I have heard from someone I know is, sometimes it depends on the Immigration agent sitting at the desk, who will be checking your documents.