That is what I am thinking. The question is does CIC generate a new UCI for new application or it remain same. In this case my application was rejected so should I use it or not ?
UCI is only given to people who have applied in the past and that's what they are asking. As you know already that this is N/A for new applications.
So, this section is specifically for you to fill in. I've no idea whether CIC will call it as an incomplete application after they find out that you are a re-applicant.