Rommel86

I agree with previous speakers that answering yes is "safer", however:
 
Do try to avoid the RFE. Explain the beejesus of the situation using additional pages, if necessary, even include the original I-129F if you can find it, stapling it to the back of the "additional information" section.

Its a little ambiguous i agree .. but I would answer yes .you have .USCIS will see your previous application   These forms are not great dealing with uncommon situations.  If the question was just ” have you filed any other /previous I 129f” you would easily answer “yes”   I wouldn't answer “no” on a technicality or wording 

At this point, I would also be considering getting married and following the spousal visa path.
 
Beyond that, if you are set for another K1/I129F submission, I agree with @Lil bear, I would check "Yes" for that question.
 
Good Luck!

If you’re using that as evidence of U.S. citizenship then yes.

The beneficiary needs to bring an original and photo copy of the beneficiary’s birth record  to both the embassy interview and the adjustment of status interview. 
 
At neither interview should the beneficiary surrender the original birth certificate.  

1. Just an ordinary photocopy of the front and back
2. No not yet. The embassy/ consulate will ask about that later in the process.  

Never, ever send originals with your application!

The original is not needed, which is good because mail between sone countries or even within some countries is time consuming or unreliable. 
 
Instead, the alien fiancé(e) can print or hand write a letter of intent  to  marry, sign / date it, take a digital photo of it, and email / message it to the U.S. citizen petitioner. The petitioner then prints the photo and includes it in the I-129F
 
For the interview, do the converse.  

Yes.
The letter of intent to marry is only as good as the date it was signed.
You can include a letter of intent to marry in the I-129F filing, and include another letter of intent to marry for the interview.
Relationships do change over the course of waiting on the K1 process, so having updated letter of intent to marry doesn't hurt.