Pre-allocation & UKFPO 2024/25 question please!!

Hi all

I am applying for pre allocation in a certain area as I help care for my disabled family member. I was told my application might not be strong enough because the med school weren’t aware.

I wanted to ask if anyone knows if I do my pre-allocation can I put a different area for the FP national allocation? (It would be a deanery near my family but not within it). It’s complicated why, but just want to know if anyone knows if this will impact me in anyway if I choose one area for pre-allocation and another for national?

Thanks y’all