I would like to have for different projects only special stati in the dropdownlist. I was able to do this with an insert into the config_table :

INSERT INTO mantis_config_table ( config_id , project_id , user_id , access_reqd , type , value )
VALUES ('status_enum_string', '1', '0', '90', '2', '10,20,30,90')

But now, if I`m choosing only this project, on all pages none of the different colours of the stati show up. If all of the projects are chosen, the right colours show up again.