Hello
I'm a little confused I thought the main purpose of a separate BRP was if you change the passport the Card is maintained as it is?
Looking at this page
http://www.ukba.homeoffice.gov.uk/vi...a-to-passport/
It does say carry both passports unless you have the separate BRP.
I'm sure if I changed Rina's passport to her married name we wouldn't need a new BRP, bearing in mind we applied for FLR after we married yet had to put her maiden name on the FLR application.
Cheers
Tone