Nomination Letter Expiry Date

Dear All , Please advise , I have AOR Since 15.11.2018 and my Nomination letter stated that Nomination will expire by mid of March 2019 , so if my PR Application delayed after mid of March - this means that I will lose my Nomination ???

if you have received your ITA and submitted your application then it should not matter if the nomination expires or not.
Make sure to get ITA before the nomination expires.