Example systems and methods to maintain process control systems are disclosed. A disclosed example method involves retrieving first information and determining whether the first information is associated with a process control system. If the first information is associated with the process control system, second information is generated to indicate that the first information is associated with the process control system. It is also determined whether the first information is associated with a particular node of the process control system. If the first information is associated with the particular node of the process control system, third information is generated to indicate that the first information is associated with the particular node.