GMAT Strategy

I have got 6.13 on a 10 point scale from College of Engineering, Guindy, which is one of the top engineering colleges in India. So what do I fill in the GPA while I enter my profile details? If I follow the conversion chart that is given just below the field, I will have to enter 1.1 on a 4 point scale! Is that it? Or is it 2.452 (0.613*4)? As of now I have kept it blank.

Also, is it necessary that I should fill the GPA field before my exam date or can I provide the details on the exam when I am being asked for?

Thanks

Hi,
I passed my graduation from an Indian University with 69.9% and when I enter GPA as per the conversion table its 1.9

Now, I too have the same doubt.
Whether to fill GPA on mba.com or leave it blank?
and
in my last attempt i filled GPA as 1.9 but now I am planning to keep it blank. Will it create any problem?
I mean last attempt with 1.9 GPA and fresh attempt without GPA.

Kindly Help.