What is the process to revise/rectify  a Form 67 that is already submitted ? I realized that I need to correct some error in the Form 67 that was just filed for the AY. However the actual IT return for the AY is yet to be filed.  So my case is - how to rectify / revise a Form 67 for the AY , when the IT return for the same AY is yet to be filed ? 

I observed  that the portal allows me to submit addtional Form 67 , if I submit a revised one , will the last one be considered and the one submitted first be disregarded ?