NO special attention shall be given to your case
You will need your IELTS at 2nd stage to CHC New Delhi with all other supporting documents after approval for NS
No need to reappear for IELTS if your AOR (which comes with the request for full application submission) date is before Jan 2010. They always suggest to take IELTS before applying. Below is my timeline. It may help you to understand.
Appeared for IELTS : March 10th 08
Applied : March 23 08
AOR date : 24th Apr 08
Full application submission request : 12th Jan 09
Full application submitted : 9th May 09
Medical+RPRF+Passports sent on 14th July 09
Passports received back with visa : 24th Aug 09
Full application letter date is considered as "locking date". The IELTS result needs to be maximum 12 months old in reference to that date only. You can check it from any source. I got this info from CHC new Delhi as I was confused about my IELTS because it was more than 12 months old when submitted.