What happens of old backlinks when we use .com instead of country specific URL


I wanted my abc.blogspot.in to load into abc.blogspot.com as described by labnol for preventing country specific url.

But i have received many quality backlinks with the abc.blogspot.in domain now if i switch for abc.blogspot.com using Amit Agrawal’s method than what will happen of all those backlinks that were created or received with abc.blogspot.in domain?

I am confused and i do not know. Please help me. Your help is greatly appreciated.