I understand that for Indiana amended returns you are to check the box at the top of Form IT-40 as follows:

__ Check here if filing an amended return. 

But I'm confused as to the next step.  Do I simply enter the revised numbers on this return and file it and let the IDOR figure out what needs to be done?  On the old IT-40X, you recorded amounts in the following columns:

Col A Original Return; Col B Amount of Change; Col C Correct  

and then compute the refund or additional amount due.

Help!