Hello Lakshit,

In the affidavit its mentioned that after how much time you will submit the renewed documents, so try to submit it before that day,

Your 3 year old obc certificate will not be considered by the NTA so don't upload it.

If your affidavit is approved by the NTA when you  uploaded it then you'll have your obc category ranking through which you can attend the Counselling

Hope this helps,

All the best !