OK, I did a little more testing.
sm_delnotice # deletes the notice from the database. However, it does not reset the notice count. Right now I am up to notice #9 even though all the other notices are deleted. The notice number keeps going up even though the old notices have been removed. I don't know if this was intended but I can see this becoming quite confusing.
Map changing does not remove from the database:
Code:
] sm_addnotice 0 1 "Test Notice" "Let see what this does"
News: Notice successfully entered into database under index 10!
] sm_loadnotices
] sm_getnotice 10
News: The requested notice has been printed to your console.
News: Server: 0, Issued: 03/16/12, Admin: Admin, Duration: 60 minutes.
News: Title: Test Notice
News: Message: Let see what this does
WAITED 1 MINUTE
] sm_map ba_jail_electric_razor_v6
[SM] Changing map to ba_jail_electric_razor_v6...
Counter-Strike: Source
Map: ba_jail_electric_razor_v6
Players: 1 / 12
Build: 4833
Server Number: 4
No pure server whitelist. sv_pure = 0
Fire ̷̨●̷̨° connected.
] sm_listnotices
News: There are no notices in the database.
] sm_getnotice 10
News: The requested notice has been printed to your console.
News: Server: 0, Issued: 03/16/12, Admin: Admin, Duration: 60 minutes.
News: Title: Test Notice
News: Message: Let see what this does