Hello gurus in the house

I applied for a study permit this year while I was in Canada but it was denied. I defferd my admission and reapply when I returned to Nigeria and it was approved some days ago. Consequently, I have sent my passport to cic for stamping
However due to some reasons, I won't be able to resume in summer and the University policy stated that student can only defer admission once

I was told to apply for new admission.

My question is that if I get new admission, will it affect my Visa already approved Visa