Citizenship Application

I am wondering if someone can help?!

I am planning to apply for my Naturalization next month and a little bit confused about the Proof of identity requirement.
It states that I need to supply the same doc I produced as at the time of the Life in the UK test

I took the LITUK last year whilst I was still on my previous visa Tier 1 and used the Residence permit as proof of identity for the test, when the home office granted me ILR they retained the previous residence permit and issued me a new one.
Now the test certificates shows that Residence permit was used as proof of id however that was the previous one and I now have a new one. I am confused how to meet the identity requirement shall I just send in my passport and explain that the BRP was retained by the home office and they issued me a new one?

Many Thanks in advance for your help!

Regards