After updating the OV‑2 from an OV‑6c,
you must check the OV‑2 and make sure that the messages between nodes
are correctly appearing as events. If you find a message going between
operational nodes displays in the OV‑2 as an operation rather than
an event, this indicates the message type was not changed to Event
in the OV‑6c diagram. The following figure shows an example of evJFMCCStandDownCompleted
appearing with the private operation symbol,
but must have the event symbol.

To fix this problem: