Newly cloned USM users, where are they stored?

Hey,
 
I've noticed that when cloening a USM user (using snmpusm),
the   /var/net-snmp/snmpd.conf      file does not change
(at least there are no new usmUser lines).
 
I want to save the new configuration (including the newly cloned users)
for back,
and restore it after a system reset.
 
1) Are newly cloned user stored in any configuration files?
    (I'de have to get their authenticaiton keys also)
 
2) How can I load those setting after reset? (should I manually inject
usmUser lines into /var/net-snmp/snmpd.conf )
 
Thanks,
Erez.