Hi MsBelinda.
With regards to the link attached, the first page will give you this information:
"Detail
Use this form:
- if your personal details have changed (holders of current biometric residence permits only)
- if your biometric residence permit has been lost, stolen or damaged
- if your biometric residence permit has expired after you have received indefinite leave to remain
- if you are a refugee (recognised under the 1951 Convention) and your immigration status document has been lost, stolen, damaged, expired; or you want to replace your immigration status document with a biometric residence permit
- if you have been granted humanitarian protection and your immigration status document has been lost, stolen, damaged, expired; or you want to replace your immigration status document with a biometric residence permit"
However, on the BRP(RC) Application form the details are different:
"Use this form:
- if your BRP has been lost, stolen or damaged
- if your BRP has expired after receiving indefinite leave to remain
- if you are a refugee (recognised under the 1951 Convention) and your ISD has been lost, stolen, damaged, expired; or you want to replace your ISD with a BRP
- if you have been granted humanitarian protection and your ISD has been lost, stolen, damaged, expired; or you want to replace your ISD with a BRP"
Definitely the first one highlighted above - changed of name has been over looked.
I agree with Rayna, it's worth contacting UKVI about this issue. Otherwise, you will end up paying £1000 if you will not update your BRP.
Good luck on your application.