[amibroker] Append new data of one stock to its existing data?

[chuck_win]

Let's say I had 1-m data of CFN until 2/5/10 in AB's database. I get 1-m data 
from 2/5/10 to 2/28/10 for CFN later. Can I append the new data to existing one 
for CFN?

Thanks.

Charles