Karen,
Sad to say but it's true. In my case, I was so excited then to secure our NBI clearances, which were almost 5 months old at the time i was about to send our full docs to VO. So I had to request again to meet the 3 month-validity requirement, so as not to give the visa officer any reason to return, request additional documents or question anything in my docs. Hirap pa nga in our case, kasi si hubby ang daming kapangalan na may mga court cases, so I had to secure court clearances all over again...for the 2nd time around.