Hi,
> I can no longer modify these jobs but i can see them , i can script them but i cant edit them any longer.
It seems that your login does not have enough permissions to modify the job in SQL Server, usually you need to have the following roles in the MSDB database: SQLAgentOperatorRole, SQLAgentReaderRole, SQLAgentUserRole.
Or the user must be a member of the sysadmin fixed server role to modify jobs not owned by itself.