chibest

Goodday. 
I am a US citizen, i will like to fill a concurrent form 130/485 for my both parents.
Some years ago my dad change his last name due to some family reasons but we the children did not change our last name. They have been marriage traditionally for year before we the children was born but only went for Court wedding last year, so their marriage certificate has their new last name on it. Am about to filled for them, their last name on my birth certificate is different from their legal name now.
They both have an affidavit of the change of name... but i am confused if the affidavit will be accepted by USCIS.
Please any advice will be deeply appreciated.
NB: They have both visited me in the US two(2) time now.
Thanks 

CR-1 Visa Interview Questions today 21th April, 2016 at the Lagos Consulate, Lagos Nigeria.
CO: Hello, How are you?
Me: I am fine. Thank you.
CO: What is your name please:
Me: **********
CO: Who is calling you in America
Me: My Wife
CO: How did you meet?
Me: We met at a church service.
CO: Explain better.
Me: I did give him what he wanted (lol)
CO: When did you see her last
Me: This morning (smiles)
CO: Has she been married before?
Me: No.
CO: Have you been married before?
Me: No.
CO: Do you have any children?
Me: No but we are expecting.
CO: Meaning?
Me: She is pregnant.
CO: Wow Congratulations
Me: Thank you.
CO: Ok. Your visa is approved.You can pick your visa in 2 weeks. (Hands over documents and USCIS Green Card Fee slip)
Me: Thank you.
It's just the Lords doing because the CO was just very friendly and in less than 2min it was all over.
I just give God all the glory for this blessing.
Thanks to all VJ members who have contributed one way or the other in this my visa process.
To all who are still waiting, please don't relent in prayers because prayer is the key.