Help me out here.

My deposits:

1/7 - 2 CR1s, which I assume for for Q4-05

3/11 - 2 CR1s, a bit early for Q1-06, but I was way over 10,000 miles already and still had over 10,000 more BIS in Q1-06

5/13 - 2 CR1s. But I only had 1000 BIS in April 06 and 3,000 BIS in May 06. So, on that date, only 4,000 miles in 2Q-06.

Did they use some of my many miles in 1Q to carry over into 2Q and thus give me the CR1s on 5/13?

thanks