Hi
I have read blog about how to remove monitoring objects. http://blogs.technet.com/b/jonathanalmquist/archive/2008/09/14/remove-disabledmonitoringobject.aspx
But In my case, it does not seems to be applicable.
I have a monitoring case where 2 SQL engines are on the same box. If I disable the discovery on Target SQL Installation seed class, then Remove-SCOMDisabledClassInstance command removes both of the database engines. I want to stop monitoring for only one instance not on both.