Fetchmail, gmail, and a new computer

I'm using fetchmail 6.3.18 (from Ubuntu Oneiric) to pull email from gmail
using POP3. It works fine. The first time I ran it it downloaded all of my
email. Every time I've run it since then it's downloaded only new email.
Gmail is configured to archive the email after it's been accessed via POP3.

Now I have a new computer (fetchmail 6.3.21, Ubuntu Precise). I would like
my new computer to pick up where the old left off. Fetchmail doesn't seem
to want to do this by default. Instead, it wants to download my entire
Gmail account. How do I make my new installation pick up where the other
one left off? Since fetchmail didn't download everything every time, even
after a reboot, it seems logical that there's a file somewhere I could copy
over, but I can't find one.

Thanks,

Jim