26 March 2013
No it will not any effect on your first group. But my suggestion is any possible at leaset attend group 2 also even you not have proper preparation and attempt the papers what you know then you will get a chance to have an experience regarding the exams and attempts etc... because of you already applied for group 2 also so chance is available to you to attend group 2 you already decisded to drop group 2 i.e you defenetly not pass i n group 2 of May 2013 then why you not give just attempt of group 2 in May 2013.
So my suggestion if possible then don't loose the oppurtunity atlease attend the exams and write what you know it will decides yourself about your knoweldege and streangth in group 2. However dropping of group 2 will not effects group 1.