spawnlists error?

hey, im new to the forums so im not rly sure where to put this. if its in the wrong place let me know!

ok so like everytime i try to delete a spawnlist that garrysmod came with ( like sliders) and save changes to spawnlist, it just comes back the next time i join a server!

does anybody know whats going on? is this supposed to happen or has anybody els had this happen???