"Your registration form and airline rewards statement were accepted, and your Capital OneŽ VentureSM miles have been reserved. We'll apply them to your account as soon as you spend $1,000 on your new Venture card in the first 90 days.
We'll send you an e-mail when we apply your matching miles to your Venture account."

The above is listed on the website when I log in. To show proof of miles, I uploaded a pdf of my March 2011 AA statement which is available on AA's website when you log into your AAdvantage account.

My statement showed 200K+ miles and only a small fraction of those miles earned in February through the AA Citi cards I have. I could have sent my November statement which showed the AA bonuses, but the dates on that statement showed the miles being earned in October and I was afraid of the six month cut off. I'm going to keep my fingers crossed and assume that the miles match I'm going to get is for the 100K and not the for the nominal number of miles earned in February from my Citi AA card spend.