Where does redhat-config-printer keep its printer data?

["Christians, Stefan Mr." <software kkalice com>]

When I add printers from the command line with lpadmin, the result is a
ppd file in /etc/cups/ppd as well as an entry in
/etc/cups/printers.conf.

The gnome-print-manager displays the new printer, on the local as well
as on remote machines, which shows that CUPS is working beautifully.

However, when I run redhat-config-printer on the local machine, it does
not list the new printer. (redhat-config-printer on remote machines
lists the new printer correctly under browsed queues).

This makes me suspect that redhat-config-printer stores configuration
information separately from cups. Does anybody know where that is?

-- 
Sincerely,

K.K. Alice
S. Christians