i received my welcome email today with this statement in it.

40,000 bonus miles will be awarded when you use your account during the first 90 days for a purchase that is not later returned or rescinded and your annual fee has been paid. Bonus miles will be awarded at the close of the billing statement after the qualifying purchase has posted. The bonus miles will appear on the cardmember's statement 6-8 weeks after the end of the promotion.

I am one of those people that closed my previous card less than 24 months ago.